How many stocks does BLAIR WILLIAM & CO/IL own?

As of Q1 2026, BLAIR WILLIAM & CO/IL holds 1,922 positions in their 13F portfolio.

What is BLAIR WILLIAM & CO/IL's largest holding?

AAPL at 4.3% of portfolio, worth $1.5B.

What is BLAIR WILLIAM & CO/IL's total portfolio value?

$34.9B as of Q1 2026, tracked across 1,922 holdings.

Is BLAIR WILLIAM & CO/IL a hedge fund?

BLAIR WILLIAM & CO/IL is an institutional investment manager required to file SEC 13F reports. This includes hedge funds, mutual funds, pension funds, and other institutions managing over $100M.

How often does BLAIR WILLIAM & CO/IL report?

13F filings are due quarterly, approximately 45 days after each quarter end.

How has BLAIR WILLIAM & CO/IL's portfolio changed in Q1 2026?

View BLAIR WILLIAM & CO/IL's latest portfolio changes, new positions, and exits for Q1 2026 on HoldingsIntel.

What is BLAIR WILLIAM & CO/IL's investment strategy?

BLAIR WILLIAM & CO/IL is classified as a Balanced Allocator fund based on HoldingsIntel's Fund DNA analysis of 6 behavioral dimensions.

HoldingsIntel

BLAIR WILLIAM & CO/IL Holdings Q1 2026 - Portfolio & Conviction Scores | HoldingsIntel

BLAIR WILLIAM & CO/IL

Institutional investor · Portfolio as of Q1 2026

SEC EDGAR SourceSEC Filings

$34.9B

AUM

1,922

Positions

Q1 2026

Filing

Rating · 4.5

Quarterly Portfolio Change

Activity profile

$ moved · Q1'26

New1%Increased35%Decreased63%Exited1%

Composition

Equity vs derivatives

Equity100%Puts0%Calls0%

Holding period

Avg 5.3 years

<1Q5%1-4Q7%1-2Y6%2Y+82%

Q1 2026 Summary

Active quarter - 151 new positions, 99 exits, 799 increased. Top move: GEV (INCREASED, conviction 50). Portfolio: $34.9B across 1922 positions.

Portfolio Allocation

Top holdings by portfolio weight

AAPL4.31%

MSFT3.71%

AMZN3.62%

NVDA2.71%

GOOG2.50%

GOOGL2.01%

JPM1.94%

GEV1.66%

V1.60%

SPY1.58%

Other1.52%

Position Outcomes

Best and worst performing positions by estimated return

Top Winners

BELFB15Q held

BEL FUSE INC

Avg $24.09 · $820,021 est. P&L

Est. P&L

+965.67%

CIEN30Q held

CIENA CORP

Avg $59.67 · $9.7M est. P&L

Est. P&L

+834.55%

MU30Q held

MICRON TECHNOLOGY INC

Avg $81.19 · $220.1M est. P&L

Est. P&L

+815.66%

Top Losers

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View plans

Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.

Top Holdings1,922 positions

Export CSV(Pro)

Activity:

Stock	Shares	Value	Weight	Price Trend	Avg Buy	Est. P&L	Held	Conviction
AAPL APPLE INC	5.9M	$1.5B	4.3%	—	$102.27	+193.57%	30 qtrssince 2018-Q4	Decreased 0
MSFT MICROSOFT CORP	3.5M	$1.3B	3.7%	—	$123.66	+245.52%	30 qtrssince 2018-Q4	Decreased 0
AMZN AMAZON COM INC	6.1M	$1.3B	3.6%	—	$114.59	+130.51%	30 qtrssince 2018-Q4	Decreased 0
NVDA NVIDIA CORPORATION	5.4M	$946.6M	2.7%	—	$118.12	+94.86%	30 qtrssince 2018-Q4	Decreased 0
GOOG ALPHABET INC	3M	$870.8M	2.5%	—	$95.36	+312.34%	30 qtrssince 2018-Q4	Decreased 0
GOOGL ALPHABET INC	2.4M	$700.5M	2.0%	—	$101.51	+291.15%	30 qtrssince 2018-Q4	Decreased 0
JPM JPMORGAN CHASE & CO	2.3M	$678.7M	1.9%	—	$105.79	+181.50%	30 qtrssince 2018-Q4	Decreased 0
GEV GE VERNOVA INC	664,603	$580.1M	1.7%	—	$407.51	+157.48%	8 qtrssince 2024-Q2	Increased 50
V VISA INC	1.8M	$557.5M	1.6%	—	$132.86	+146.12%	30 qtrssince 2018-Q4	Decreased 0
SPY Unit STATE STR SPDR S&P 500 ETF T	845,294	$549.7M	1.6%	—	$325.26	+128.25%	30 qtrssince 2018-Q4	Decreased 0
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