SPY, Sep 18, 2026 · Trading desk

Paper trading, not investment advice. Every account and book on these pages trades paper money: the Alpaca paper accounts DAILY ($1,000,000 from Sep 30, 2026), INTRA1 ($100,000 from Sep 30, 2026) and INTRA2 ($100,000 from Sep 30, 2026); the simulated books SIM-TT ($100,000 from Sep 29, 2026), SIM-V2B ($100,000 from Sep 28, 2026) and SIM-V2B-TOM ($100,000 from Sep 28, 2026), filled at the official close; and market-analysis's ledgers, one contract per position against a $100,000 reporting equity. No real money is at stake. Positions, trades and P&L are published the same day, as the engines record them, with each number's source and cost model labelled. Nothing here is a recommendation to buy, sell or hold any security, and nothing is tailored to you. Each strategy is a pre-registered experiment, read once on a date or at a trade count fixed in advance; until then its record says little either way. I may hold or have held positions in securities shown here. Markets can and do lose money.

Account: MA
Strategy: S-B SPY put spread, exploration
Book: exploration
Symbol: SPY
Asset class: option structure
Side: short
Exposure: long
Status: closed
Opened: Sep 18, 2026
Closed: Oct 9, 2026
Quantity: 1
Entry price: 1.279187
Exit price: 0.00
Exit by: expiry
Book value at entry: —

Record GitHub ledger

Cost model

half of each leg's quoted spread plus $0.65 a contract at entry; $0.65 a contract at expiry

Entry value: —
Exit value: —
P&L: +$127.92
Dividends: —
P&L with dividends: —
Costs: $3.60
Net P&L: +$124.32
Return: —
Of the book: —
R multiple: +0.05
Held: 21 days

Role	Date	At (ET)	Side	Qty	Asked	Price	Rule's price	Close	Slippage	Against the close	How	Why	The rule's numbers
entry	Sep 18, 2026	—	sell	1	—	1.279187	—	—	—	—	late window	gate OFF:G2	8 trigger numbers x 15.44 vix 15.44 asof 2026-09-17 mode both vix3m 18.55 reason OFF:G2 verdict OFF:G2 x_median 15.585 9 numbers m 0.03552370653559954 x 14.81 spot 762.25 width 25 window P3 dte_cal 21 entry_cost_usd 2.299949074990355 entry_tier_max 1 credit_over_width 0.05116746031746031
exit	Oct 9, 2026	—	buy	1	—	0.00	—	—	—	—	expiry	held to expiry	4 numbers settle_close 778.56 exit_cost_usd 1.3 exit_tier_max 4 settle_source daily_contract

Contract	Right	Strike	Expiry	Side	Qty	Entry	Exit	Facts
SPY261009P00735000	put	735.00	Oct 9, 2026	short	1	2.229187	0.00	4 numbers exit_tier 4 entry_tier 1 entry_source print_vwap entry_spread 0.0045086319444444444
SPY261009P00710000	put	710.00	Oct 9, 2026	long	1	0.95	0.00	4 numbers exit_tier 4 entry_tier 1 entry_source print_vwap entry_spread 0.010472

Settled at the underlying's last print that day: the official close was not loaded when the engine graded it.

variant: B1
risk_usd: 2372.0813492063494
graded_at: 2026-10-09
n_touches: 4
policy_id: sb-1.0
structure: PS
max_loss_usd: 2372.0813492063494
cost_over_credit: 0.028142487844071584

SPY · S-B SPY put spread, exploration

The trade

Result

Entry and exit

Legs

Notes