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.

Trade

DXCM · v2b on Alpaca paper

Opened Oct 21, 2026, in DAILY.

The trade

Account: DAILY
Strategy: v2b on Alpaca paper
Book: v2b
Symbol: DXCM
Asset class: equity
Side: long
Exposure: long
Status: open
Opened: Oct 21, 2026
Closed: —
Quantity: 26
Entry price: 80.181121
Exit price: —
Exit by: —
Book value at entry: $98,113.59

Record Trade journal

Cost model

Alpaca paper fills, with no commission. In the DAILY account, shares one sub-book buys and another sells at the same close meet inside the account at the official close, and every leg on the larger side gets one average of that price and Alpaca's fill. Alpaca's SEC and CAT fees, charged by the day, are left out. Commission is estimated at $0.007 a share a side, the rate at the owner's own broker: the net P&L is the P&L less it, without dividends; the P&L, the total with dividends, the return and the P&L in basis points of the sub-book are before it. An open trade is marked at the latest official close, before commission, with the dividends paid so far beside it.

Marked

Marked on: Oct 22, 2026
Price: 78.32
Quantity: 26
Unrealized: −$48.39
Realized: $0.00
Dividends: $0.00
Held: 1

Entry and exit

Role	Date	At (ET)	Side	Qty	Asked	Price	Rule's price	Close	Slippage	Against the close	How	Why	The rule's numbers
entry	Oct 21, 2026	15:55 ET	buy	26	26	80.181121	80.845001	80.260002	−82.1 bp	−9.8 bp	signal	entry rank 1 rsi 5.0	19 trigger numbers adv 313512796.5621948 rsi 5.024089725705756 rank 1 close 80.84500122070312 spy_sma 723.2344412231446 exit_sma 5 sma_exit 85.26300048828125 tradable true raw_close 80.84500122070312 sma_trend 74.22692504882812 spy_close 772.7650146484375 trend_sma 200 candidates 1 core_is_on true free_slots 11 exit_signal false entry_signal true rsi_entry_below 10 max_hold_sessions 10 8 numbers time 15:55:33 sleeve pullback netting buys 107 sells 0 crossed 0 met_inside false under_price 0 account_order sent 107 side buy filled 107 status filled at_limit 107 at_market 0 avg_price 80.18112100000002 bp_vs_close −9.828200115987729 orders_sent 1 snapshot_last_bar 2026-10-21 15:40:46-04:00 final_close_agrees null

Path while held

Span: 1 session
High: 80.489998 on Oct 22, 2026
Low: 77.110001 on Oct 22, 2026
Best point (MFE): +0.39%
Worst point (MAE): −3.83%
Bars from: public daily bars

Notes

v2b: RSI(2) pullback in S&P 500 stocks, and SPY while above its 200-day average