BLAIR WILLIAM & CO/IL

CIK 0000902367 · CHICAGO, IL · Quarter end: 2026-06-30 · Filed on: 2026-08-11 · Open the SEC source

BLAIR WILLIAM & CO/IL reported 1,998 positions worth $38.39B as of June 30, 2026 (13F filed August 11, 2026). Largest holding: AAPL (4.3%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$38.39B
2026 Q2
Positions
1,998
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
26.3%
Est. Net Flow (Q)
2026 Q2
10 / 1998 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1AAPLAPPLE INCSH$1.66B4.32%5,731,525
2AMZNAMAZON COM INCSH$1.40B3.65%5,875,124
3MSFTMICROSOFT CORPSH$1.28B3.35%3,442,574
4NVDANVIDIA CORPORATIONSH$1.08B2.80%5,374,424
5GOOGALPHABET INCSH$1.04B2.72%2,953,724
6GOOGLALPHABET INCSH$858.6M2.24%2,402,621
7GEVGE VERNOVA INCSH$775.0M2.02%659,673
8JPMJPMORGAN CHASE & COSH$743.2M1.94%2,270,360
9SPYSTATE STR SPDR S&P 500 ETF TSH$633.3M1.65%848,034
10VVISA INCSH$631.8M1.65%1,841,604

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does BLAIR WILLIAM & CO/IL hold as of Q2 2026?

BLAIR WILLIAM & CO/IL reported 1998 positions worth $38.39B in its Q2 2026 13F filing. Largest positions: AAPL (4.3%), AMZN (3.6%), MSFT (3.3%), NVDA (2.8%) and GOOG (2.7%).

What did BLAIR WILLIAM & CO/IL buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did BLAIR WILLIAM & CO/IL sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.