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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.

ℹ️ Character descriptions are creative personas representing trading strategy styles. They are not financial advice, promises, or guarantees of performance.

Jun 20, 2024 Jun 20, 2026 (730d)

📊 2 Years Performance: We gave Professor Mean $10,000 and let him trade 114 symbols from Dec 31, 2023 to today. 🟢 LIVE

$10,460
Avg Value (per symbol)
Started at: $10,000 (+$460)
+4.60%
2-Year ROI
56.6%
Win Rate
36,701
Total Trades

Quick Performance Comparison

Click any period to view detailed stats

+1.5%
1 Month
-2.0%
3 Months
-1.3%
6 Months
+0.3%
YTD
-0.4%
1 Year

Equity Curve (2 Years)

Combined P&L across all 114 symbols

💰 Trading Activity (2 Years)

Stock Volume
$330,947,465
31,475 trades
Stock Fees
$0
✓ Commission FREE
Crypto Volume
$17,825,434
5,226 trades
Crypto Fees
$44,564
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: Jun 20, 2024 Jun 20, 2026 (730 days)
📖 Understanding Score & Momentum columns
📊 Score — Lifetime Quality Score
Measures how well this strategy+symbol combination has performed across the entire simulation history. Based on return, win rate, drawdown control, profit factor, and trade count. Higher is better.
75+ Elite   60+ Good   40+ Fair   <40 Weak
⚡ Mom — 30-Day Momentum Score
Measures performance over the last 30 days only. Same quality model but calibrated for short-term activity. Captures recent regime shifts that the lifetime score may miss.
75+ Hot   60+ Active   40+ Moderate   <40 Quiet
Spread Indicators — Comparing Mom vs Score reveals regime sensitivity:
🔥 Heating Up — Mom is 20+ points above Score. This symbol is performing significantly better recently than its lifetime average. Could indicate a favorable regime shift.
🧊 Cooling Off — Mom is 20+ points below Score. This symbol is underperforming recently despite a strong lifetime track record. Could indicate an unfavorable regime shift.
No icon = Steady — Scores within ±20 points. Consistent performance.
⚠️ Scores are calculated from simulated backtest data and are for informational purposes only. They do not constitute financial advice or predict future performance. Full methodology →
Rank Symbol Score Mom Return Start Final Value Trades Win Rate Fees Net Max DD Avg Hold Refunds Last Refund Action
1 SOXL 56 87🔥 +204.88% $10,000 $30,488 300 65% - +$20,488 -43.9% 5.2h -
2 AMC 69 56 +153.61% $10,000 $25,361 320 67% - +$15,361 -18.6% 5.2h -
3 NVDA 53 67 +63.92% $10,000 $16,392 319 61% - +$6,392 -11.5% 4.4h -
4 PLTR 49 17🧊 +60.31% $10,000 $16,031 312 62% - +$6,031 -11.2% 4.9h -
5 CRWD 48 78🔥 +54.65% $10,000 $15,465 311 62% - +$5,465 -12.6% 6.7h -
6 BMY 52 17🧊 +51.04% $10,000 $15,104 305 66% - +$5,104 -10.5% 5.6h -
7 GS 68 67 +49.81% $10,000 $14,981 314 62% - +$4,981 -3.9% 6.1h -
8 RBLX 41 68🔥 +48.67% $10,000 $14,867 309 63% - +$4,867 -18.1% 7.7h -
9 NET 34 74🔥 +34.33% $10,000 $13,433 312 58% - +$3,433 -16.9% 6.4h -
10 MRK 46 44 +34.05% $10,000 $13,405 309 64% - +$3,405 -8.0% 4.8h -
11 AVGO 38 29 +33.70% $10,000 $13,370 317 62% - +$3,370 -12.8% 5.7h -
12 BLK 56 26🧊 +33.41% $10,000 $13,341 308 66% - +$3,341 -4.0% 4.8h -
13 MU 34 66🔥 +33.25% $10,000 $13,325 294 62% - +$3,325 -23.5% 4.9h -
14 USO 37 13🧊 +30.86% $10,000 $13,086 302 57% - +$3,086 -11.5% 5.6h -
15 C 47 55 +30.86% $10,000 $13,086 310 59% - +$3,086 -6.0% 5.3h -
16 VXX 30 50 +27.92% $10,000 $12,792 304 59% - +$2,792 -19.3% 6.2h -
17 MCD 48 14🧊 +26.65% $10,000 $12,665 307 60% - +$2,665 -4.1% 5.4h -
18 INTC 29 88🔥 +26.44% $10,000 $12,644 316 59% - +$2,644 -24.3% 6.5h -
19 HOOD 30 9🧊 +26.03% $10,000 $12,603 309 61% - +$2,603 -26.1% 6.6h -
20 ISRG 33 17 +24.99% $10,000 $12,499 314 62% - +$2,499 -17.0% 4.5h -
21 JNJ 49 27🧊 +24.95% $10,000 $12,495 305 67% - +$2,495 -5.7% 5.0h -
22 MS 37 26 +24.54% $10,000 $12,454 318 60% - +$2,454 -9.7% 6.1h -
23 MARA 28 89🔥 +24.27% $10,000 $12,427 311 61% - +$2,427 -29.5% 6.1h -
24 SCHW 41 11🧊 +23.28% $10,000 $12,328 316 65% - +$2,328 -7.0% 5.7h -
25 JPM 38 37 +21.50% $10,000 $12,150 311 62% - +$2,150 -7.6% 5.9h -
26 AMZN 31 50 +21.40% $10,000 $12,140 310 59% - +$2,140 -15.2% 5.8h -
27 XLK 36 62🔥 +21.22% $10,000 $12,122 323 65% - +$2,122 -11.6% 6.8h -
28 TQQQ 30 84🔥 +19.75% $10,000 $11,975 313 62% - +$1,975 -17.9% 5.9h -
29 BRK-B 44 23🧊 +19.45% $10,000 $11,945 317 63% - +$1,945 -4.6% 6.3h -
30 REGN 32 53🔥 +19.42% $10,000 $11,942 311 63% - +$1,942 -13.4% 6.7h -
31 VRTX 40 47 +19.33% $10,000 $11,933 309 60% - +$1,933 -5.5% 5.3h -
32 CRM 32 71🔥 +18.68% $10,000 $11,868 308 61% - +$1,868 -9.2% 8.0h -
33 NFLX 30 10 +18.45% $10,000 $11,845 318 61% - +$1,845 -13.7% 6.8h -
34 ARM 27 48 +18.42% $10,000 $11,842 321 59% - +$1,842 -16.8% 6.3h -
35 DKNG 30 12 +18.26% $10,000 $11,826 311 61% - +$1,826 -14.0% 5.1h -
36 AMGN 34 14 +18.16% $10,000 $11,816 318 64% - +$1,816 -10.0% 4.5h -
37 AMD 27 61🔥 +16.52% $10,000 $11,652 317 61% - +$1,652 -28.5% 6.3h -
38 SNOW 27 43 +16.41% $10,000 $11,641 312 59% - +$1,641 -17.7% 6.3h -
39 GOOGL 31 54🔥 +16.27% $10,000 $11,627 305 60% - +$1,627 -9.9% 5.7h -
40 META 34 16 +16.14% $10,000 $11,614 319 59% - +$1,614 -5.9% 5.3h -
41 PG 36 57🔥 +15.58% $10,000 $11,558 312 65% - +$1,558 -7.0% 6.1h -
42 AXP 28 17 +13.46% $10,000 $11,346 317 62% - +$1,346 -12.7% 4.9h -
43 AAPL 28 17 +13.20% $10,000 $11,320 312 62% - +$1,320 -13.3% 6.8h -
44 SPXU 24 18 +12.91% $10,000 $11,291 140 56% - +$1,291 -19.1% 10.6h -
45 VOO 37 36 +12.83% $10,000 $11,283 309 61% - +$1,283 -5.6% 5.6h -
46 KO 33 17 +12.25% $10,000 $11,225 303 62% - +$1,225 -6.2% 5.8h -
47 SOFI 26 46 +11.88% $10,000 $11,188 305 61% - +$1,188 -26.0% 5.5h -
48 QQQ 34 57🔥 +11.87% $10,000 $11,187 309 63% - +$1,187 -4.4% 6.1h -
49 XLF 32 32 +11.55% $10,000 $11,155 309 59% - +$1,155 -5.4% 6.9h -
50 ARKK 27 65🔥 +11.44% $10,000 $11,144 312 61% - +$1,144 -16.4% 6.2h -
51 UVXY 23 14 +11.42% $10,000 $11,142 302 62% - +$1,142 -33.5% 6.8h -
52 MA 30 17 +9.70% $10,000 $10,970 314 61% - +$970 -5.8% 7.6h -
53 WMT 30 13 +9.42% $10,000 $10,942 299 64% - +$942 -4.5% 6.2h -
54 SPY 31 34 +8.97% $10,000 $10,897 305 63% - +$897 -7.1% 5.9h -
55 BAC 25 52🔥 +8.64% $10,000 $10,864 310 58% - +$864 -7.2% 6.8h -
56 CVX 27 33 +7.66% $10,000 $10,766 320 61% - +$766 -5.5% 6.1h -
57 VTI 25 44 +6.88% $10,000 $10,689 306 58% - +$689 -8.8% 6.0h -
58 COIN 20 33 +6.65% $10,000 $10,665 302 58% - +$665 -42.7% 6.1h -
59 PFE 21 28 +5.31% $10,000 $10,531 311 61% - +$531 -11.8% 6.2h -
60 RIOT 20 40 +5.07% $10,000 $10,507 307 59% - +$507 -50.0% 7.1h -
61 GILD 21 33 +4.89% $10,000 $10,489 309 62% - +$489 -18.5% 6.6h -
62 UNH 24 65🔥 +4.41% $10,000 $10,441 319 67% - +$441 -22.2% 5.8h -
63 COST 22 20 +3.86% $10,000 $10,386 313 60% - +$386 -7.2% 5.7h -
64 HD 20 45🔥 +3.13% $10,000 $10,313 311 59% - +$313 -5.1% 3.8h -
65 SLV 21 57🔥 +3.02% $10,000 $10,302 310 64% - +$302 -25.0% 4.9h -
66 IBM 18 9 +2.92% $10,000 $10,292 308 58% - +$292 -9.2% 4.7h -
67 ORCL 15 44🔥 +2.54% $10,000 $10,254 316 55% - +$254 -27.9% 6.9h -
68 PEP 17 14 +1.18% $10,000 $10,118 311 63% - +$118 -12.9% 6.3h -
69 TLT 15 12 +0.62% $10,000 $10,062 307 58% - +$62 -6.8% 5.3h -
70 IWM 13 40🔥 +0.20% $10,000 $10,020 304 59% - +$20 -14.5% 7.0h -
71 SHIBUSD +0.00% $10,000 $10,000 NO ENTRY - - - -0.0% 0.0h -
72 PEPEUSD +0.00% $10,000 $10,000 NO ENTRY - - - -0.0% 0.0h -
73 VZ 14 17 -0.57% $10,000 $9,943 304 62% - -$57 -12.7% 5.7h -
74 V 13 23 -0.66% $10,000 $9,934 312 58% - -$66 -5.0% 6.8h -
75 COP 11 17 -0.68% $10,000 $9,932 306 58% - -$68 -18.3% 5.6h -
76 CSCO 14 25 -1.08% $10,000 $9,892 308 61% - -$108 -10.7% 7.5h -
77 PYPL 13 24 -1.11% $10,000 $9,889 293 60% - -$111 -17.7% 6.3h -
78 ABBV 15 58🔥 -1.32% $10,000 $9,868 310 65% - -$132 -17.6% 6.6h -
79 XOM 14 25 -1.80% $10,000 $9,820 316 61% - -$180 -9.1% 5.5h -
80 SLB 12 10 -1.89% $10,000 $9,811 312 63% - -$189 -18.4% 6.7h -
81 DIA 13 37🔥 -2.74% $10,000 $9,726 303 57% - -$274 -11.0% 5.4h -
82 GLD 11 45🔥 -3.60% $10,000 $9,640 306 59% - -$360 -7.6% 5.1h -
83 PM 13 14 -3.98% $10,000 $9,602 305 60% - -$398 -10.7% 5.3h -
84 XLE 11 22 -4.04% $10,000 $9,596 313 58% - -$404 -13.3% 5.3h -
85 PANW 11 65🔥 -4.05% $10,000 $9,595 310 55% - -$405 -24.6% 6.9h -
86 MDT 13 51🔥 -4.75% $10,000 $9,525 306 59% - -$475 -13.7% 4.9h -
87 DIS 11 22 -4.97% $10,000 $9,503 323 57% - -$497 -21.3% 6.2h -
88 TMO 13 14 -5.01% $10,000 $9,499 313 58% - -$501 -13.7% 5.2h -
89 WFC 13 33 -6.80% $10,000 $9,320 307 62% - -$680 -15.9% 6.5h -
90 BIIB 15 29 -6.90% $10,000 $9,310 312 64% - -$690 -26.8% 4.7h -
91 TSLA 12 19 -6.95% $10,000 $9,305 310 59% - -$695 -25.6% 5.0h -
92 OXY 11 52🔥 -6.98% $10,000 $9,302 313 58% - -$698 -17.0% 6.1h -
93 MSFT 12 13 -7.60% $10,000 $9,240 314 56% - -$760 -10.0% 4.8h -
94 LLY 14 46🔥 -9.47% $10,000 $9,053 312 63% - -$947 -24.9% 5.9h -
95 NIO 12 15 -10.59% $10,000 $8,941 299 60% - -$1,059 -30.0% 6.6h -
96 ACN 12 69🔥 -12.30% $10,000 $8,770 318 59% - -$1,230 -15.0% 6.8h -
97 CMCSA 14 36🔥 -14.99% $10,000 $8,501 309 62% - -$1,499 -19.7% 6.3h -
98 ADBE 11 16 -19.73% $10,000 $8,027 314 57% - -$1,973 -18.6% 6.8h -
99 RIVN 11 7 -20.30% $10,000 $7,970 310 58% - -$2,030 -32.4% 7.7h -
100 LCID 11 19 -21.38% $10,000 $7,862 308 60% - -$2,138 -30.7% 5.2h -
101 GME 13 10 -25.59% $10,000 $7,441 313 62% - -$2,559 -44.4% 6.8h -
102 SMCI 15 46🔥 -26.69% $10,000 $7,331 310 61% - -$2,669 -55.7% 5.3h -
103 DOTUSD -40.68% 🔄 $10,096 $9,781 104 31% $5,137 -$315 -99.1% 1.0h 5 Feb 6, 2026
104 MRNA 10 38🔥 -43.74% $10,000 $5,626 306 59% - -$4,374 -31.7% 6.1h -
105 SQQQ 9 9 -44.72% $10,000 $5,528 303 54% - -$4,472 -42.9% 6.3h -
106 DOGEUSD -64.01% 🔄 $10,098 $3,691 211 51% $7,010 -$6,406 -150.9% 4.0h 1 Jul 30, 2025
107 AVAXUSD -67.44% 🔄 $10,100 $6,098 203 24% $6,777 -$4,001 -99.0% 1.1h 5 Jan 25, 2026
108 ETHUSD -72.16% 🔄 $10,100 $5,356 233 24% $7,489 -$4,744 -99.0% 1.0h 5 Jan 22, 2026
109 LINKUSD -94.40% 🔄 $10,100 $1,048 560 22% $9,935 -$9,052 -99.0% 1.0h 4 Nov 25, 2025
110 UNIUSD -96.27% 🔄 $10,094 $648 654 31% $8,974 -$9,446 -99.1% 1.0h 4 Nov 11, 2025
111 BTCUSD -97.35% 🔄 $10,098 $497 730 12% $10,511 -$9,601 -99.0% 1.0h 4 Oct 30, 2025
112 LTCUSD -97.92% 🔄 $10,095 $390 823 23% $12,903 -$9,705 -99.1% 1.0h 4 Oct 10, 2025
113 SOLUSD -98.38% 🔄 $10,099 $301 733 20% $8,569 -$9,798 -99.1% 1.0h 4 Oct 27, 2025
114 XRPUSD -99.10% 🔄 $10,100 $164 975 20% $11,835 -$9,936 -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.