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Professor Mean
8

Professor Mean

The Mathematician

📐 Swing Trader 📅 146 years old (Born 1880)

"Price is a drunk stumbling home. It may wander, but it always returns to the mean."

Impossibly old—a walking artifact from the Victorian era. Bow tie, antique spectacles, chalk dust on his academic robes. His hands shake slightly, but his mind is sharp.

📊 View Performance: 1 Month 3 Months 6 Months YTD 1 Year 2 Years
Feb 14, 2024 Feb 14, 2026 (731 days)
🎯 Asset Class: 📈 Stocks 102 Crypto 12 🌐 All Assets 114 ⚠️ Crypto has 0.25% trading fees - results reflect fee impact

📊 2 Years Performance: We gave Professor Mean $10,000 and let him trade 12 crypto symbols from Dec 31, 2023 to today. 🟢 LIVE

$3,811
Avg Value (per symbol)
Started at: $10,000 ($-6,189)
-61.89%
2-Year ROI
21.8%
Win Rate
4,513
Total Trades

Quick Performance Comparison

Click any period to view detailed stats

-38.8%
1 Month
-55.0%
3 Months
-60.4%
6 Months
-44.2%
YTD
-60.7%
1 Year

Equity Curve (2 Years)

Combined P&L across all 12 symbols

💰 Trading Activity (2 Years)

Stock Volume
$0
0 trades
Stock Fees
$0
✓ Commission FREE
Crypto Volume
$15,986,344
4,513 trades
Crypto Fees
$39,966
0.25% of volume

⚠️ Important Note: This simulation tests each symbol with its own $10K account (not pooled). Crypto symbols can show 40-75%+ fee drag due to high trade frequency.

Stocks are FREE on Alpaca, so the ~100 stock symbols have zero fee impact.

⚙️ Trading Strategy

Trade 2 standard deviation extremes back to mean

When price moves 2 standard deviations from its 20-day average, the move is statistically extreme. Professor Mean profits from the inevitable return to normalcy.

🎯 Best Suited For

Range-bound stocks and ETFs

"Everything reverts to the mean. Everything."

📜 Why This Strategy Works

Markets overreact. Good news pushes prices above fair value; bad news pushes them below. Extremes are by definition unsustainable.

Mathematical Formula

CODE VERIFIED — These formulas are extracted directly from the simulation engine and verified against the source code.
Source: scripts/run-*-simulation.php

📊 Entry Signal

📈 Entry Signal

Z-Score ≤ -2.0 (price is 2+ std devs below mean)
→ BUY at current close price

📉 Exit Rules

• MEAN_REVERSION: Z-Score ≥ 0 (price returned to mean)
• STOP_LOSS: Z-Score ≤ -3.0 OR price ≤ entry × 0.92 (-8%)
• MAX_HOLD: Hold time ≥ 10 days

⚙️ Simulation Parameters

MEAN_PERIOD: 20
ENTRY_STD_DEVS: 2
EXIT_AT_MEAN: 1
STOP_LOSS_STD_DEVS: 3
MAX_HOLD_DAYS: 10

📖 Historical Origin

Origin: Sir Francis Galton's regression to the mean

Sir Francis Galton was a polymath who, in the 1880s, discovered "regression toward mediocrity" while studying hereditary traits. The principle was universal: extreme measurements tend to be followed by less extreme ones.

🏆 Top 10 Performing Symbols (2 Years)

📉 Worst 5 Performing Symbols (2 Years)

📊 All Symbol Results

Click on any row to see detailed trade history with equity curve

📅 2 Years: Feb 14, 2024 Feb 14, 2026 (731 days)
Rank Symbol Return Start Final Value Trades Win Rate Fees Net Max DD Avg Hold Refunds Last Refund
1 PEPEUSD +0.00% $10,000 $10,000 NO ENTRY - - - -0.0% 0.0h -
2 SHIBUSD +0.00% $10,000 $10,000 NO ENTRY - - - -0.0% 0.0h -
3 DOTUSD 🚫 PROBATION -9.78% 🔄 $10,096 $9,584 36 36% $1,821 -$512 -99.1% 1.0h 5 Feb 6, 2026
22d left
4 AVAXUSD 🚫 PROBATION -47.19% 🔄 $10,100 $5,695 119 26% $4,329 -$4,405 -99.0% 1.1h 5 Jan 25, 2026
10d left
5 ETHUSD 🚫 PROBATION -51.68% 🔄 $10,100 $5,241 150 26% $5,306 -$4,859 -99.0% 1.0h 5 Jan 22, 2026
7d left
6 DOGEUSD -61.33% 🔄 $10,098 $3,905 208 51% $6,953 -$6,193 -150.9% 4.0h 1 Jul 30, 2025
7 LINKUSD -90.52% 🔄 $10,100 $1,013 475 19% $9,508 -$9,086 -99.0% 1.0h 4 Nov 25, 2025
8 UNIUSD -94.64% 🔄 $10,094 $575 575 30% $8,736 -$9,518 -99.1% 1.0h 4 Nov 11, 2025
9 BTCUSD -95.28% 🔄 $10,098 $511 652 12% $10,316 -$9,587 -99.0% 1.0h 4 Oct 30, 2025
10 LTCUSD -96.68% 🔄 $10,095 $360 740 23% $12,747 -$9,735 -99.1% 1.0h 4 Oct 10, 2025
11 SOLUSD -97.11% 🔄 $10,099 $316 659 19% $8,456 -$9,784 -99.1% 1.0h 4 Oct 27, 2025
12 XRPUSD -98.43% 🔄 $10,100 $168 899 20% $11,772 -$9,932 -99.0% 1.2h 3 Sep 14, 2025

👤 Personality

Speaks in equations. Finds human behavior predictable and slightly disappointing. Gets genuinely excited about standard deviations.