What's the typical credit spread win rate?

At 16-delta short strikes with 30-DTE entries and 50% profit close, the illustrative 60-cycle SPY put credit spread backtest shows roughly 75% win rate. Holding to expiration drops the realized win rate to ~62% because gamma risk in the final two weeks turns winning positions into losers more often than it converts losers to winners.

What delta should I sell credit spreads at?

In the illustrative backtest, 16-20 delta short strikes produce the best risk-adjusted return. 10-delta is statistically safer but the premium is so thin that rare max losses dominate. 30+ delta credit spreads collect more premium but the win rate drops to ~55% and tail losses overwhelm the higher per-trade credit.

Does the credit spread work in down markets?

Put credit spreads suffer in down markets — they're directionally bullish. The bear bucket (2022 plus March 2020) is the strategy's worst stretch in the illustrative 5-year backtest: a 42% win rate, three near-max losses in 12 cycles, and -$1,130 of net P&L. Call credit spreads (bearish) outperform during bear markets. Many credit spread traders rotate between put and call credit spreads based on the prevailing trend.

How important is the 50% profit-take rule for credit spreads?

It is the entire edge. The illustrative backtest shows closing at 50% of max profit produces +$585 of net P&L per contract over 60 cycles, vs roughly -$90 if every position is held to expiration. Same entries, same strikes — just the exit rule. Closing early gives up half of each winner's theoretical premium but lifts the win rate from 62% to 75% and cuts max drawdown from -28% to -15%.

Are credit spreads better than naked short puts?

Credit spreads have capped max loss (wing width minus credit); naked puts have open-ended downside equivalent to owning the stock at strike. Naked puts collect more premium per trade and benefit from owning the stock if assigned. Credit spreads are the more capital-efficient and risk-defined choice for accounts under $250k; naked puts only make sense for accounts that can absorb 100-share assignments without disruption.

Strategy Deep-Dive

Credit Spread Backtest: 60 SPY Cycles, Five Regimes

Put credit spreads rolled monthly on SPY from 2020 to 2024. Win rate by delta, regime-by-regime P&L, and the exit rule that supplies the whole edge.

Simulated data for display. Illustrative narrative — not a verified live backtest. Build real backtests on the strategy builder.

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Cycles

SPY, 30-DTE roll

Win Rate

75%

16-delta + 50% close

Net per Cycle

+$10

+$585 over 60

Max Drawdown

-15%

2022 bear leg

The Test Setup

Underlying: SPY. Bull put spread structure (sell put, buy lower-strike put as wing).

Entry: 30 DTE, short strike at 16 delta, 5-point wide wings.

Exit rules tested: (1) hold to expiration; (2) close at 50% max profit; (3) close at 50% + 200% stop-loss.

Sizing: One contract throughout, single position at a time, $10,000 starting equity. The max loss on the headline spread ($375) is the buying power held per cycle.

Period: January 2020 – December 2024 inclusive.

Win Rate by Short-Strike Delta

Delta	Win Rate	Avg Credit	Avg Winner	Avg Loser	Max Loss	Net / Cycle
10	85%	$65	+$32	-$400	$435	-$33
16 ★	75%	$125	+$63	-$150	$375	+$10
20	68%	$165	+$83	-$155	$335	+$7
30	55%	$240	+$120	-$160	$260	-$6

Every row ties out. Max loss is the $5 width minus the credit, each average winner is exactly half the credit because the profit target is 50% of max, and net per cycle is win rate × average winner − loss rate × average loser. For the starred row: 0.75 × $63 − 0.25 × $150 = +$9.75, shown rounded.

The average loser is not monotonic. A 10-delta short strike on SPY is only breached by a crash, so the rare losers run nearly to the $435 max and swamp the thin credit — that row loses money despite an 85% win rate. At 16-delta losers are a mix of shallow expiry breaches and the occasional deep one, averaging -$150 against a $375 max. Past 20-delta ordinary pullbacks breach the strike, and by 30-delta the extra credit no longer covers the traffic through it. The expectancy column peaks at 16-delta and it is thin everywhere — on an index, this trade lives or dies on management, not entry.

Exit Rules: The Single Highest-Impact Decision

Exit Rule	Win Rate	Net / Cycle	Max Drawdown	60-Cycle Net
Hold to expiration	62%	-$2	-28%	-$90
Close at 50% max	75%	+$10	-15%	+$585
50% max + 200% stop	73%	+$10	-10%	+$612

The exit rule is the entire edge: same entries, same strikes, and the difference between -$90 and +$585 over five years. Holding to expiration keeps the full $125 credit when it wins (62% of the time), but the losers it lets run average -$205 and erase everything. The 200% stop barely moves expectancy — it converts the near-max bear losers into contained ones, trimming the average loser to -$135 and buying back a third of the drawdown.

Performance by Market Regime

Regime	Years	Cycles	Win Rate	Net P&L
Bull market	2021, 2023, 2024	36	86%	+$1,503
Choppy / sideways	Q1-Q2 2020, 2024	12	75%	+$212
Bear market	2022, March 2020	12	42%	-$1,130

The three rows tie out twice over: the win rates blend to the headline 75% (31 + 9 + 5 = 45 wins of 60), and the nets sum to the headline +$585. The bear bucket is where the size lives — its seven losers include the three near-max losses and average -$206, versus -$90 for the five bull-market losers. Put credit spreads thrive in bull and choppy markets; in bears the directional headwind overwhelms premium collection. Rotating to call credit spreads during downtrends recovers most of this drag.

Anatomy of the Worst Cycle (March 2020)

Entered SPY 285/280P put credit spread for $0.95 credit ($95 per contract). COVID lockdowns triggered a 32% drop over four weeks. Short put went deep ITM. Held to expiration produced max loss of -$405. With 200% stop, exit at -$190 saved $215 per contract.

This single cycle accounted for nearly all the strategy's drawdown in 2020. The stop-loss rule earned its keep in this scenario.

Five Takeaways

Sell at 16-delta short strike. 10-delta too thin, 30-delta too rich. 16-delta is the historical sweet spot.
Close at 50% max profit, always. It is the entire edge: +$585 over five years vs -$90 holding to expiration. This is the single biggest win available.
Add a 200% stop-loss. Cuts max drawdown by a third without hurting average P&L. Essential for bear regimes.
Rotate direction with the trend. Put credit spreads in uptrends, call credit spreads in downtrends. Static directional bias is a return drag.
Skip low-IV cycles. When VIX is under 13, the premium isn't worth the locked capital. Wait for IV to expand.

Test these rules with live data

Use our screener to find liquid tickers at attractive IV rank, then build the trade on the credit spread calculator.

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