Stonks Lab ๐Ÿ“ˆ

Private paper-trading lab. Enter the password.

STONKS LAB ๐Ÿ“ˆ

Mike's paper-trading laboratory โ€” testing "one stock a week" with fake money before any real money.
Data baked in on July 27, 2026 at 11:39 AM ยท refreshes on each rebuild

Paper account โ€” the $250 experiment

Paper bankroll
$250.00
no trades yet โ€” ask Claude to paper-buy
vs. boring baseline
$0.00
ahead of $250 parked in SPY ($250.00)
Current position
All cash
no open position

Today's screener โ€” top 10 momentum candidates

#TickerPrice 12-mo mom.3-mo mom. TrendScore
1CVS$106.55+76.3%+36.8%50d 200d0.95
2PANW$326.82+49.7%+78.7%50d 200d0.91
3LLY$1,197.60+49.7%+38.2%50d 200d0.91
4MRK$131.90+57.0%+20.5%50d 200d0.89
5JNJ$267.68+55.1%+19.5%50d 200d0.88
6UNH$417.34+56.3%+18.3%50d 200d0.88
7ABBV$260.68+36.3%+33.0%50d 200d0.85
8GE$358.95+36.4%+26.3%50d 200d0.85
9AAPL$338.78+33.2%+26.7%50d 200d0.83
10MS$214.05+51.8%+13.2%50d 200d0.83

Screened Jul 27, 2026. "12-mo mom." is the classic 12-1 momentum signal (past year's return, skipping the last month). A high rank means "fits the historical momentum pattern" โ€” not "will go up."

The 9-year backtest โ€” strategy vs. doing nothing

One-stock-a-week momentum
$7,148
+45.3%/yr after costs + 24% short-term tax
Boring baseline (SPY)
$776
+13.5%/yr ยท buy once, ignore, 15% LTCG
Win rate
56%
262/469 weeks over 9 years
Worst drawdown
-68%
vs -32% for SPY
One-stock-a-week momentum $250 parked in SPY

Log scale โ€” equal vertical steps are equal percentage moves. Backtest run 2026-07-27, 469 weekly trades. Hover for values. Curves show market value along the way; the tiles above show the final take-home after taxes.

Year-end values (table view)
Year endStrategySPY
2017$304$276
2018$298$266
2019$648$346
2020$2,705$409
2021$1,263$527
2022$963$431
2023$1,305$544
2024$3,398$686
2025$3,367$801
2026$8,315$869

Before you believe that chart โ€” the fine print

Survivorship bias is doing the heavy lifting. The pick was NVDA (122 wks), TSLA (77 wks), OXY (55 wks) in 54% of all weeks. The stock universe is today's winners โ€” the backtest effectively knew in advance to keep them on the list, and never owned anything that cratered or delisted. A bias-free version would look far worse.

The drawdown was -68%. Would you really keep betting the system after losing two-thirds of the bankroll? Almost everyone quits at the bottom โ€” which turns a paper win into a real loss.

Single worst weeks hit โˆ’22%. Whole bankroll, one stock, no exits. A 56% win rate with that variance is how winning records still go broke.

The market, in betting terms

The vig. Every short-term trade pays spread + slippage both ways, and winning years are taxed at ordinary-income rates (~24%+) instead of the 15% long-term rate. Weekly trading pays the vig 52 times a year; the boring baseline pays it once, years from now.

Who the fish are. In the short-term game, retail traders are the small fish โ€” market makers and quant funds are the house, profiting from retail order flow itself. Only low-single-digit percentages of retail day traders stay profitable long-term.

The retail edge is patience. Fund managers get fired for one bad year, so they can't sit through drawdowns. The small fish's structural advantage is time horizon โ€” which is why "boring and long" beats "clever and fast" for almost everyone.

The experiment: 8โ€“12 weeks of paper trades, zero real dollars. If the picks can't beat the baseline with fake money, real money would only have added losses and taxes.