The 20 most similar historical sessions across 25 features, and what followed them.
Prior close profile (2026-10-14, QQQ $728.95): session -1.97% · 5-day -3.80% · vs 200-DMA +8.2% · below 52-week high -4.0% · RSI2=3 · VIX 16.9 · policy rate 3.63% (1-year -0.47)
Closest analog 2025-11-13 (distance 0.34): session -2.04% · 5-day -0.53% · vs 200-DMA +12.4% · below 52-week high -4.3% · RSI2=11 · VIX 20.0 · policy rate 3.88% (1-year -0.70)
What followed: next day +0.08% ·
5-day -3.74% ·
20-day +0.86%
Side by side | 2026-10-14 (prior session) -1.97% ↔ 2025-11-13 -2.04%; today maps to the day after 2025-11-13, which was +0.08% (single days are mostly coincidence — the Top-20 statistics below are more reliable)
| Analog (top 5) | Distance |
That day |
Next day |
5 days on |
RSI2 then |
20 days on |
| 2025-11-13 |
0.34 |
-2.04% |
+0.08% |
-3.74% |
11 |
+0.86% |
| 2024-10-31 |
0.36 |
-2.52% |
+0.74% |
+6.14% |
10 |
+5.35% |
| 2024-12-30 |
0.42 |
-1.33% |
-0.85% |
-0.08% |
11 |
+1.44% |
| 2025-08-01 |
0.43 |
-1.97% |
+1.85% |
+3.73% |
3 |
+2.98% |
| 2025-02-25 |
0.44 |
-1.26% |
+0.24% |
-3.46% |
1 |
-3.87% |
Top-20 analog statistics (deduplicated — far more reliable than any single day):
Next day mean +0.17% (up 60% of the time, range -1.5% to +1.8%) · 5-day +1.15% (75%) · 20-day +2.19% (75%)
Note: QQQ drifts up over time, so the unconditional probability of any given next day being positive is already about 55%. Compare the “up %” above against that baseline, not against 50%.
25 features in three equally weighted groups: price position (return / distance to moving averages / position in the 52-week range / trend slope / consecutive up-down days / gaps) + technicals (RSI2 / RSI14 / volatility / relative volume / volume trend / range / KDJ-J / Bollinger %B / MACD histogram) + environment (VIX / rate cycle / credit spreads / dollar index / oil / S&P P/E / CBOE equity P/C / AAII bull-bear spread). Weighted z-score Euclidean distance; matching pool 1999-03-22–2026-10-14 (6935 days, excluding ±60 days around the target). Narrative context, not a trading signal: after four rounds of feature engineering the Top-1 next-day directional hit rate tops out at 54.9%, still below the 57% you get by always guessing up. The data is given in full, but do not use it for direction — it answers “which historical setup does today resemble”, not “will tomorrow be up or down”.
Research output, not investment advice.