SPX Desk: Should You Sell SPX Put Credit Spreads Today?
One page for the S&P 500 put seller: today’s read for new 1 DTE, 7 DTE and 45 DTE put credit spreads, the next Fed statement, VIX in context, our featured SPX 7DTE put credit spread with its backtest and stop-rule comparison.
IV Rank (1y)34— based on VIXVIX 19.45 (S&P 500 30-day implied vol, calculated from SPX options). 1y low 13.47, high 31.05. IV percentile 78%. As of Oct 23, 2026. What is IV Rank?
SPX Desk
S&P 500, one year
Daily candles, the short averages for the dated put-credit reads, and the 200-day trend filter.
SPX
7,623.68
-39.75 (-0.52%)
VIX
19.45
+0.42 (+2.21%)
Delayed daily bars. Not a live quote. Bars through Oct 23, 2026.
▬ 5-day▬ 10-day▬ 200-day · 5-day for 1 DTE, 10-day for 7 DTE, 200-day as the trend filter. The 50-day sits on the 45 DTE card.
1 DTE put credit
Skip
7,689.52 · -0.86%5-day average · the line a 1 DTE can reach
Skip new 1 DTE put credit. Price is 0.86% under the 5-day average (7,689.52), and this session is -0.52%. The 5-day is the average a one-day spread can actually reach. The 200-day is irrelevant on this expiration. VIX is 19.45, and it is jumping versus its own 20-day average. The credit is small, so one gap erases a run of winners. The next FOMC statement is Wed, Oct 28, 2026, in 5 days — not inside this trade.
7 DTE put credit
Stand aside
7,718.27 · -1.23%10-day average · the line a 7 DTE can reach
Stand aside on new 7 DTE put credit until after the statement. Wed, Oct 28, 2026 is in 5 days, inside a seven-day expiration, with the decision at 2:00 PM ET. Price is 1.23% under the 10-day average (7,718.27), which is the nearby line, but a weekly sold today would still be on when the Fed speaks. Wait for the release, then look at the 10-day again.
45 DTE put credit
Selective — wide only
7,699.64 · -0.99%50-day average · the line a 45 DTE can reach
Selective on 45 DTE, and only wide. Price is 0.99% under the 50-day average (7,699.64). The last 20 sessions are -1.55% and today is -0.52%. VIX at 19.45 is not a reason to crowd the 50-day. The 200-day is still under the market, so the longer trend is intact. The next statement, Wed, Oct 28, 2026, is in 5 days and falls inside this expiration. One meeting is normal in a 45-day short put.
Closest FOMC day
Wed, Oct 28, 2026
In 5 days · statement 2:00 PM ET. Statement only, no dot plot.
The next statement falls inside a 7 DTE held from this quote. A weekly sold today would still be alive at 2:00 PM ET.
Market health
↗ Trending higher
SPX is above the 200-day at 7,291.31, and both the average and the last 60 sessions (+2.50%) are pointing up.
Solidity: solid
Held the 200-day on 60 of the last 60 sessions, and sits +4.56% from it. Drawdown from the one-year high is -2.50%.
VIX
VIX is 19.45, up 0.42 on the day and above its 20-day average of 16.54. The last-year percentile is 78. Ordinary, not a reason to crowd a strike.
20-day avg
16.54
1-year range
13.47 – 31.05
Percentile
78
Featured trade: the SPX 7DTE put credit spread
This is the core SPX trade behind the desk. Check today’s 7 DTE card before every entry: right now it reads Stand aside. Stand aside on new 7 DTE put credit until after the statement. Wed, Oct 28, 2026 is in 5 days, inside a seven-day expiration, with the decision at 2:00 PM ET. Price is 1.23% under the 10-day average (7,718.27), which is the nearby line, but a weekly sold today would still be on when the Fed speaks. Wait for the release, then look at the 10-day again.
The rules
Trend filter. Only when SPX closed above its 200-day average the day before.
Entry. 3:30–4:00 pm ET. Sell the SPXW put that expires 5 trading days out at about 9 delta, and buy the put 25 points lower.
Minimum credit. Take it only for $1.20 or more.
Stop. At 3:50 pm, if SPX is below the short strike, close that spread. If SPX opens more than 1% below the short, close it at the open. No intraday “touch” stop.
Exit. Otherwise hold to expiry.
Size. The plan runs 2 spreads per entry day with at most five entry days open. Size so no single loss can knock you out. The stats below are per single spread.
Why we like it
High probability of profit. The short strike starts about 9 delta, well below SPX. In the backtest 96% of trades made money; today’s example has a model POP of about 91%.
Defined risk. The long put 25 points lower caps the loss at the width minus the credit (about $2,379 a spread), and SPX options are cash-settled, so there is no assignment into shares.
Quick time decay. A week to expiry is where an option’s time value melts fastest, and the money is back in about five trading days, ready for the next entry.
It is an advantage play, not a guess. Like counting cards, the edge per hand is small and it shows up only over many hands played the same way. The backtest averaged $51.31 a spread, about 2.2% of the money at risk. The rules decide when to play and when to sit out: the 200-day filter, the $1.20 minimum, the stop, and the desk’s FOMC check.
The catch. Losers are rare but large: the average loss (−$1,622) is about 13 times the average win ($121). The stop and the size rule exist for those days.
Backtest results (hypothetical)
Period tested
Jun 2, 2009 to Oct 23, 2026 (test window Jan 2008–Oct 2026; the 200-day rule kept it out of 2008 and early 2009)
Trades
726 (one spread per entry day, at most five open; the $1.20 minimum passed on 15% of days at model prices)
Win rate
96.0% (697 winners, 29 losers)
Average credit
$124 a spread
Average win / average loss
$121 / −$1,622
Average per trade
$51.31 (2.16% of the $2,379 average risk)
Stops
23 (3.2% of trades), average −$1,491
Worst trade
−$2,395 (entered Apr 29, 2010)
Total P&L
$37,248 per spread
Average month
$336 in months with trades (111); $178 over all 209 months
Losing months
15 of 111 months with trades; worst −$7,938 (Aug 2011), best $2,568
Max drawdown
−$9,536 on closed trades (bottom Nov 1, 2011)
Profit factor
1.79 (gross wins ÷ gross losses)
Cumulative P&L of one spread per entry day, by exit date (model backtest, after fees and slippage). Ends at $37,248 on Oct 23, 2026.
SPX 7DTE put credit spread backtest by year, one spread per entry day
Year (exit)
Trades
Win rate
P&L
Worst trade
2009
135
99.3%
$14,917
−$1,400
2010
97
95.9%
$3,628
−$2,395
2011
46
89.1%
−$4,627
−$2,389
2012
38
100.0%
$4,541
$117
2013
15
100.0%
$1,789
$117
2014
13
100.0%
$1,551
$117
2015
12
100.0%
$1,425
$118
2016
19
94.7%
$492
−$1,676
2017
1
100.0%
$119
$119
2018
33
93.9%
$1,435
−$1,230
2019
19
100.0%
$2,259
$117
2020
114
90.4%
−$3,288
−$2,393
2021
68
100.0%
$8,206
$117
2022
16
87.5%
−$2,638
−$2,394
2023
30
100.0%
$3,566
$117
2024
23
91.3%
−$692
−$1,656
2025
19
94.7%
$1,197
−$969
2026
28
100.0%
$3,368
$117
Account view, from the same research (a $200k account, 1 spread a day, open risk capped at $12,500, new trades paused after a $6,000 losing month, marked to market daily, Jan 2008–Oct 2026, entry filter of $1.10 at model prices): average month $352, median month $725, 21% losing months, worst month −$9,455 (Aug 2011), max drawdown −$23,400 (Jun 11, 2020), worst year −$15,587 (2018).
Which stop works best? Touch vs 3:50 close vs hold
The same 726 trades from the backtest above, run three ways. Every number is per spread, after fees and slippage.
Touch stop: close when SPX trades at the short strike. 3:50 close stop: close if SPX is below the short strike at 3:50 pm. Hold: no stop. Fill cushion: how much worse, on average, each stopped trade could fill before the average trade falls to zero (average per trade ÷ share of trades stopped).
A touch stop cuts trades that would have recovered. It stopped 8.3% of trades against 3.2% for the 3:50 rule, and its win rate fell to 91.7%. Many of those trades dipped to the short strike and came back. Result: about 41% less per trade ($30.1 vs $51.3).
Holding made the most per trade, with the worst losing months. $72.2 a trade and a 97.8% win rate, but the deepest month (−$9,315, Aug 2011) and nothing to get you out if the market keeps falling into a crash.
The 3:50 close rule is the middle ground, and it is the rule this page uses: it keeps most of the edge ($51.3 a trade) and exits only when SPX actually closes the day through the short strike.
Taking profit early (80% of the credit by day 3) lowered the average trade for every rule: hold $64.1 (was $72.2); 3:50 close stop $43.2 (was $51.3); touch stop $22.0 (was $30.1).
Is every rule positive EV?
Yes. All three made money on average in the backtest after fees and modeled slippage, but the margin is very different: hold $72.2 a trade (3.03% of risk), 3:50 close stop $51.3 (2.16%), touch stop $30.1 (1.26%).
The fill cushion asks how much worse, on average, each stopped trade could fill before the edge is gone (average per trade ÷ share of trades stopped):
Touch stop: $363 per spread (about $3.63 of option price). It stops about 1 in 12 trades, and those exits happen in fast markets where fills are worst, so slippage can erase this edge. It is the thinnest of the three.
3:50 close stop: $1,603 per spread (about $16 of option price). Far fewer stops, so much more room for a bad fill.
Hold: No stops, so no stop-fill risk, but full exposure to crashes and the deepest losing month (−$9,315, Aug 2011).
Option prices in the backtest are modeled, so expect real results to be somewhat lower for all three rules.
The 3:50 pm check is approximated with the daily close (the backtest uses daily bars). A gap through both strikes is a full loss whichever rule you use. Stop fills are modeled; in a fast market real fills can be much worse. Source: ETFap’s SPX research, final system run of Oct 24, 2026 (model backtest, hypothetical).
Backtests are hypothetical, not guarantees. These are model results, not real trades, and past results do not predict future results. Option prices are modeled from the VIX9D index (calibrated to Oct 2026 SPX chains) because free historical option quotes are not available. Only daily bars were used, so the 3:50 pm check is approximated with the daily close. Real stop fills in a fast market can be much worse than modeled, a gap through both strikes is a full loss that no stop prevents, and the desk’s FOMC check was not part of the test.
Assumptions: $1.30 commission per contract per leg, at entry and again at exit when the spread is bought back; credit = model mid − $0.10; buying back costs model value + $0.10; stop fills at model value × 1.05 + $0.10; gap exits at the open pay at least 15% (min $0.20) over model value; spreads that expire worthless pay no exit fee. On the real Oct 2026 chain the $1.20 minimum passed about 4 days in 5, far more often than at model prices. Source: ETFap’s SPX research, final system run of Oct 24, 2026.
Today’s 7DTE example, with POP, POT and P50
On the Oct 23, 2026 close the rules point to the Oct 30, 2026 7,335/7,310 SPXW put spread: short put delta 0.089, mid credit $1.25 ($125 a spread), which meets the $1.20 minimum. POP 91%, POT 19%, P50 93%. Today’s 7 DTE read above is Stand aside, so this one waits until after the Fed statement.
SPX 7DTE put credit spread (about 9 delta, 25 wide)
Sell the SPXW put about 9 delta that expires 5 trading days out, buy the put 25 points lower, and take it only for $1.20 or more. Close it if SPX closes below the short strike at 3:50 pm; otherwise hold to expiry.
POP probability of profit
91%
Chance the trade makes money if held to expiration (SPX above the $7,333.75 breakeven on Oct 30, 2026).
POT probability of touch
19%
Chance SPX trades at the $7,335.00 short strike at some point before expiration. (Rule of thumb: 2 × delta ≈ 18%.)
P50 probability of 50% profit
93%
Chance you can buy it back for $0.625 or less (50% of the credit kept) at some daily close before expiration.
Price
SPX $7,623.68 (last close, Cboe delayed quote, Oct 23, 2026)
Expiration
Oct 30, 2026 (7 days)
Sell
7335 put (mid $9.40, delta 0.09)
Buy
7310 put (mid $8.15)
Credit
$1.25 per index point = $125.00 per contract
Breakeven
$7,333.75
Risk
Most you can lose: $2,375 per contract (width minus credit)
Exit
Close if SPX closes below the 7335 short strike at the 3:50 pm check (or opens more than 1% below it); otherwise hold to expiry.
Rule check
Meets the $1.20 minimum credit
As of Oct 23, 2026 close. IV used: 21.3% (implied vol of the short strike, solved from its mid price (Cboe delayed quote); SPX’s 30-day IV was 14.8%). Model: lognormal prices (Black-Scholes), constant IV, risk-free rate 4.03% (13-week US T-bill yield (^IRX)), no dividends. POP from the price distribution at expiration; POT from the barrier (reflection) formula; P50 from 40,000 simulated daily price paths (fixed seed), repricing each option every day. Credit: mid of the Cboe delayed bid/ask at the close. Recalculated every trading day. These are model odds, not forecasts.
Check the trend. See whether SPX closed above its 200-day average; the 7DTE trade and the 45 DTE read need it.
Read the card for your expiration. Use the 1 DTE card (vs the 5-day average), the 7 DTE card (vs the 10-day) or the 45 DTE card (vs the 50-day).
Check the FOMC date. If the next Fed statement falls inside a 7 DTE, stand aside on new weeklies until after 2:00 PM ET on statement day.
Check VIX and IV Rank. VIX jumping above its 20-day average and a high IV Rank mean bigger swings: go wider or skip.
Apply the 7DTE rules. Near the close, find the SPXW put about 9 delta 5 trading days out and the put 25 points lower; take it only for $1.20 or more, and close it if SPX closes below the short at 3:50 pm.
Size it. Size so no single loss can knock you out, and check the example trade’s POP, POT and P50 against your own strikes and fills.
What each read means
1 DTE put credit (5-day average)
A one-day spread is judged against the 5-day average, the line SPX can actually reach by tomorrow. Under it, on a red day or with VIX jumping above its 20-day average, the read is Skip: the credit is small, so one gap erases a run of winners. Over it with VIX calm, it is on. An FOMC statement inside the trade is always a skip. Today: Skip.
7 DTE put credit (10-day average and the FOMC check)
A weekly is read against the 10-day average. If the next Fed statement falls inside the seven days, the read is Stand aside until after the 2:00 PM ET release, whatever the chart says. This is the card to check before the featured 7DTE trade. Today: Stand aside.
45 DTE put credit (50-day average)
A 45-day spread is read against the 50-day average, with the 200-day as the trend filter. Over the 50-day with the trend intact it is on; under the 50-day but above the 200-day it is Selective — wide only; under the 200-day, stand aside. One FOMC meeting inside 45 days is normal. Today: Selective — wide only.
Market health
Market health says whether SPX is trending higher and how solidly it has held the 200-day over the last 60 sessions. Size so no single loss can knock you out. A smaller account can use XSP, one tenth the size of SPX.
Data and method
SPX (^GSPC) and VIX (^VIX) daily bars from Yahoo Finance, delayed. Averages are simple moving averages of daily closes; the one-year high and low and the VIX percentile use the last 252 closes; 20-day realized volatility is the annualized standard deviation of daily log returns. FOMC dates are from the Federal Reserve’s published calendar. This build used bars through Oct 23, 2026 (SPX close 7,623.68, VIX 19.45); the page refreshes them in your browser. The example trade is priced from Cboe’s delayed SPX option quotes; see how POP, POT and P50 are calculated.
Risks
A put credit spread can lose the full width minus the credit, and SPX can gap through both strikes overnight or on a Fed day.
A high win rate does not mean low risk: the losses are rare but much larger than the wins.
Moving-average rules lag. A trend filter can stay on into the start of a decline.
Daily bars are delayed and can be revised. Check your broker’s live quote before you trade.
See the OCC’s “Characteristics and Risks of Standardized Options” before trading options.
SPX Desk FAQ
What is the SPX Desk?
A free page that reads the S&P 500 (SPX) for put credit spreads: whether new 1 DTE, 7 DTE and 45 DTE put credit spreads are favorable, selective or a skip today, the closest FOMC statement, VIX in context, market health, and the featured SPX 7DTE put credit spread with its backtest, stop-rule comparison and live POP, POT and P50.
What is the SPX 7DTE put credit spread trade?
Near the close, sell the SPXW put about 9 delta that expires 5 trading days out and buy the put 25 points lower, only for a credit of $1.20 or more and only when SPX closed above its 200-day average. Close it if SPX closes below the short strike at the 3:50 pm check; otherwise hold it to expiry.
What did the SPX 7DTE backtest show?
In a model backtest from Jun 2, 2009 to Oct 23, 2026, 726 trades won 96.0% of the time. The average win was $121, the average loss −$1,622, the worst trade −$2,395, and the average result $51.31 a spread after fees. It uses modeled option prices, not historical quotes, so it is hypothetical.
Should I stop out when SPX touches my short strike?
In our SPX 7DTE backtest, no. A touch stop closed many trades that would have recovered and cut the average trade to $30.1, against $51.3 for closing only if SPX is below the short strike at 3:50 pm, and $72.2 for holding to expiry. Holding had the deepest losing months and no way out of a crash, so the page uses the 3:50 close rule. A gap through both strikes is a full loss with any rule.
Is a put credit spread positive EV?
It can be, but the edge is small and depends on the rules. In our SPX 7DTE 25-wide backtest (726 trades, 2009 to 2026, after fees and modeled slippage) the average trade was +$72.2 holding to expiry, +$51.3 with a 3:50 pm close stop and +$30.1 with a touch stop. The touch stop leaves only about $363 of fill cushion per stopped trade, so slippage in a fast market can erase it. Option prices are modeled, so real results will be somewhat lower. Past and backtested results do not guarantee future results.
Why is the 5-day average used for 1 DTE and the 10-day for 7 DTE?
Each expiration is read against the moving average its price can realistically reach before it expires. A one-day spread can reach the 5-day average, a weekly the 10-day, and a 45-day spread the 50-day. The 200-day is the trend filter for the 45 DTE read and the 7DTE trade.
Why does the SPX Desk say stand aside on 7 DTE before an FOMC meeting?
When the Fed’s 2:00 PM ET statement falls inside the life of the trade, a weekly sold today is still open when rates are announced, and SPX can gap either way. The page says to wait for the release and then check the 10-day again. One meeting inside a 45-day spread is treated as normal.
SPX or XSP for a small account?
XSP is the Mini-SPX index option, one tenth the size of SPX, so the same spread risks one tenth as much. It keeps the SPX features: cash settlement, European exercise and 60/40 tax treatment (Section 1256) in the US. Size so no single loss can knock you out; if one SPX spread is too big for that, use XSP.
What is IV Rank for SPX, and why does it use VIX?
IV Rank (1y) shows where implied volatility sits in its past-year range: (today − 1-year low) ÷ (1-year high − 1-year low) × 100. For SPX we use VIX itself: Cboe calculates VIX from SPX option prices, so it is SPX’s own 30-day implied volatility, not a stand-in. On the last build VIX was 19.45 against a 1-year range of 13.47 to 31.05, an IV Rank of 34. A high IV Rank means put credit pays more, usually because the market is already under stress.
How often does the SPX Desk update?
The reads use daily SPX and VIX bars from Yahoo Finance. The page refreshes them on load and every minute while open, and shows the latest delayed SPX print. This build used bars through Oct 23, 2026. The example trade is repriced from Cboe’s delayed SPX option quotes after each close.
Is this trading advice?
No. The SPX Desk applies a fixed set of rules to public data and shows the result. It is education, not a recommendation, and a put credit spread can lose the full width minus the credit.
Education only, not financial advice. This site is not affiliated with any fund issuer. Coins-per-share figures come from issuer websites and can be delayed or wrong, so check the issuer’s page before you rely on a number. Crypto is very volatile and you can lose money.