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Analysts β€Ί William Blair

Is William Blair a reliable analyst?

Updated 2026-10-30
In short β€” Over 1 year, 51.9% of William Blair's targets turned out profitable, for an average gain of +28% per call (i.e. +13% vs its sector), across 129 timestamped calls replayed against real prices. JPI verdict: mixed reliability. An analyst can be good in one sector and poor in another β€” details below.
Profitable calls (1y) i
51.9%
Avg gain / call i
+28%
vs sector i
+13%
Scored calls i
129

Which sectors is it reliable in?

% profitable and average gain per call, by sector (min. 8 calls).
SectorProfitable callsAvg gain / callCalls
Consumer Discretionary70%+56%10
Industrials55.2%+38%29
Information Technology62.1%+35%29
Health Care53.6%+21%28
Financials23.5%+6%17

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Frequently asked questions

Is William Blair a reliable analyst?

In short β€” Over 1 year, 51.9% of William Blair's targets turned out profitable, for an average gain of +28% per call (i.e. +13% vs its sector), across 129 timestamped calls replayed against real prices. JPI verdict: mixed reliability. An analyst can be good in one sector and poor in another β€” details below.

Which sectors is William Blair best at?

Ses secteurs les plus fiables : Consumer Discretionary (70% profitables, +56% / call), Industrials (55.2% profitables, +38% / call), Information Technology (62.1% profitables, +35% / call).

How many of William Blair's calls are analyzed?

129 timestamped William Blair targets were replayed against real prices over 1 year β€” the basis for the 51.9% profitable-calls figure.

What is JPI Invest?

JPI Invest aggregates analyst recommendations across the entire S&P 500 (plus the S&P MidCap 400), replays them against real prices and measures who predicts best β€” on results, not reputation. Instead of taking a price target at face value, you see each analyst's track record on each stock.

Explore JPI Invest for free β†’ How it works: the method β†’

⚠️ Educational, not advice. « Reliability » = past targets replayed against real prices (point-in-time). Past performance does not predict the future.