Buy a longer-dated put, sell a shorter-dated OTM put. Profits from time decay + a moderate drop.
๐ฏ Target
64d from today
โ๏ธ Legs
LONG PUT ยท $1070 ยท Sep '26
Qty 1 ยท Premium $290.9 ยท ฮ -0.41
SHORT PUT ยท $1020 ยท Aug '26
Qty 1 ยท Premium $138.7 ยท ฮ -0.38
P&L at Expiry
Stock (100 sh)Diagonal Put SpreadNowTarget
๐ก Stock vs Options at Target
If STX hits $1020 by Aug 21:
the diagonal put spread returns
$-2,247
(-14.8%)
on $15,220 risked, vs
$-5,023
(-4.7%)
for 100 shares on $107,023.
Options give 3.1ร capital efficiency.
๐ Expiry
Options expire Aug 21, 2026
(64 days out).
P&L shown is the value at expiry if STX is at $1020.
Use the 30d / 60d / 90d / 180d pills to compare different expiries.
Forward Projection
Reprices legs at (target_price, target_date) via Black-Scholes. Works on existing BS service. Simplest mode โ ship first.
Historical Backtest
Uses our historical options chains to replay this exact strategy over past expirations. Needs: date picker, "rolling every N days", cumulative P&L chart.
Signal Backtest
"Run this strategy on every BUY-rated stock with score โฅ 80 for last 90d." Reuses score_backtest pipeline + strategy overlay.
Solve for Return
Inverse: user says "+50% in 90d", system solves for required price move, shows IV-implied probability. Pure math.
๐ P&L Scenarios โ what happens at different prices and dates
STX Price
Today
Jul 9
Jul 30
Aug 21 (exp)
$856
(-20%)
-$9,344
-$8,934
-$8,326
-$8,217
$910
(-15%)
-$9,348
-$8,870
-$8,062
-$6,828
$963
(-10%)
-$9,408
-$8,895
-$7,964
-$4,995
$1020
(-5%)โ target
-$9,529
-$9,016
-$8,055
-$2,546
$1049
(-2%)
-$9,611
-$9,111
-$8,176
-$3,989
$1070
(0%)โ spot
-$9,679
-$9,195
-$8,295
-$4,977
$1092
(+2%)
-$9,754
-$9,290
-$8,436
-$5,895
$1124
(+5%)
-$9,877
-$9,450
-$8,687
-$7,150
$1177
(+10%)
-$10,107
-$9,757
-$9,183
-$8,933
$1231
(+15%)
-$10,359
-$10,100
-$9,745
-$10,371
$1284
(+20%)
-$10,628
-$10,466
-$10,335
-$11,516
Uses STX's current IV for repricing. P&L includes all legs (stock + options). Qty: 1x.