UNH 20d vol: the current reading and its track record

UNH's current 20d vol reading and what that signal has historically been followed by.

This page covers UnitedHealth Group (UNH) — its current 20d vol reading and the measured historical record of what UNH 20d vol extremes were followed by.

How to read this. These figures are measured only on instruments currently in our coverage — a set of companies that survived. Signals that appear to have 'worked' on the downside are conditioned on these names having recovered; a company that fell and never came back would not be here to measure. Read every number below as a property of this surviving sample, not a universal rule, and never as advice.

All figures are ‘excess’ returns — measured relative to each instrument’s own historical drift, not relative to the market. This is not alpha and not a market-beating claim; it isolates the signal from the instrument’s background trend. Measured from the first day each signal appeared (not its most extreme point), so it reflects what was knowable in real time.

Measured across UNH’s 20d vol history from 1985 to 2024: 103 oversold episodes. Oversold readings were followed by -0.44% excess at 5 sessions and -0.93% by 20.

On this signal, UNH was most recently oversold on 2024-10-03.

Measured-outcome coverage runs through 2024-10-03 — the most recent episode with forward sessions scored; the current reading above is later, as of 2026-08-21.

When UNH was overbought / at a high extreme

UNH has only 14 past episodes on this signal — too few to characterize on their own. Showing the all-stocks pattern instead.

Across 810 past episodes where a stock was overbought on this signal, the 807 with a complete 20-session forward window beat a stock’s own trailing drift by 0.18 percentage points on average (51% of those 807 beat drift).

the stock forward excess return vs its own drift after overbought 20d vol readings, by horizon.
horizonexcess vs own driftbeat-drift rateepisodes with complete horizon
1 session+0.26%47%810
5 sessions+0.05%49%810
20 sessions+0.18%51%807

When UNH was oversold / at a low extreme

Across 103 past episodes where UNH was oversold on this signal, the close 20 sessions later lagged UNH’s own trailing drift by 0.93 percentage points on average (45% of episodes beat drift).

UNH forward excess return vs its own drift after oversold 20d vol readings, by horizon.
horizonexcess vs own driftbeat-drift rateepisodes with complete horizon
1 session+0.05%47%103
5 sessions-0.44%46%103
20 sessions-0.93%45%103

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