Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Last 8 quarters through Sep 30, 2026 (filing window open)
Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory
records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book.
The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter:
1,426 filers,
like-for-like change +72.2%; actively managed books +75.6%; index-like books -3.3%.
Holder type
Share
Filers
Change
New
Exited
Registered adviser
74.4%
955
+114.6%
23
31
Exempt adviser
0.0%
2
+26.9%
0
0
Adviser
4.8%
14
-0.1%
1
1
Bank
1.6%
41
-2.8%
0
0
Insurer
0.4%
4
-0.1%
0
0
Broker-dealer
0.0%
1
-7.8%
0
1
Registered fund
0.0%
1
0.0%
0
0
Benefit plan
0.2%
2
-9.6%
0
0
Non-US
3.4%
4
+0.7%
0
0
Holding company
5.2%
8
-13.1%
0
0
Unknown
9.8%
394
+20.2%
20
19
Style
Share
Filers
Change
New
Exited
Index-like
5.4%
25
-3.3%
0
0
Systematic-like
0.1%
9
+16.1%
2
1
Concentrated
17.6%
543
+22.8%
19
22
Diversified active
76.5%
844
+95.2%
23
28
Unknown
0.3%
5
-0.8%
0
1
Not measured
0.0%
0
—
0
0
Turnover
Share
Filers
Change
New
Exited
Low turnover
30.5%
1,112
+13.3%
24
37
Medium turnover
63.2%
177
+135.5%
8
10
High turnover
1.1%
23
+332.5%
6
2
Unknown
5.2%
114
-14.1%
6
3
Not measured
0.0%
0
—
0
0
Holding horizon
Share
Filers
Change
New
Exited
Short horizon
1.9%
108
-12.9%
8
4
Medium horizon
63.9%
233
+119.2%
12
11
Long horizon
31.2%
1,051
+13.2%
20
35
Unknown
3.0%
34
+1378.2%
4
2
Not measured
0.0%
0
—
0
0
13F book size
Share
Filers
Change
New
Exited
Under $1B
10.1%
722
+75.7%
24
31
$1B to $10B
9.2%
503
+35.1%
13
16
$10B to $100B
68.5%
135
+102.3%
5
3
$100B or more
12.2%
66
-8.9%
2
2
Not measured
0.0%
0
—
0
0
Client base
Share
Filers
Change
New
Exited
Individuals and high net worth
10.7%
823
+91.8%
18
24
Pooled investment vehicles
0.1%
22
+8.3%
3
0
Registered funds and BDCs
2.1%
23
-0.6%
1
2
Pension and profit sharing plans
0.0%
10
+0.7%
0
2
Insurance companies
0.0%
2
0.0%
0
0
Charitable organizations
0.1%
6
-3.9%
0
0
Governments and sovereign funds
0.0%
4
-70.6%
0
0
Banks and thrifts
0.0%
2
-5.3%
0
0
Corporations
60.2%
10
+135.9%
0
1
Other investment advisers
0.0%
4
+50.0%
1
0
Other
0.0%
5
-2.9%
0
0
Diversified
1.1%
41
-5.9%
0
2
Unknown
25.6%
474
+3.7%
21
21
Private funds
Share
Filers
Change
New
Exited
Hedge funds
0.5%
79
-2.7%
4
2
Private equity funds
0.4%
38
-7.1%
0
4
Venture capital funds
0.0%
8
-0.8%
0
0
Real estate funds
2.0%
15
+3531.6%
0
0
Securitized asset funds
0.1%
1
+0.5%
0
0
Other private funds
1.7%
51
-3.3%
0
1
Mixed private funds
0.0%
7
-5.6%
0
0
Private funds, type not stated
0.0%
14
-22.1%
0
0
No private funds
69.6%
742
+119.5%
19
24
Liquidity funds
0.0%
0
—
0
0
Unknown
25.6%
471
+3.7%
21
21
Location
Share
Filers
Change
New
Exited
United States
34.2%
1,338
+20.8%
40
49
Outside the US
65.8%
88
+124.7%
4
3
The Sep 30, 2026 filing window is still open, so its
bar shows only the filers that have filed so far.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out.
The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later
quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type
comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster
current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and
book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none
was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 15 holders with no observed 2026-03-31 13F and 11 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Fund Ownership of BRK-A by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026
Index funds and index ETFs hold 3,027 shares.
Fund type
Shares
Funds
Index funds
33
1
Index ETFs
2,994
3
Active ETFs
8
1
Active funds
1,240
5
Unclassified
0
0
All registered funds
4,275
10
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share
positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or
before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have
no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their
advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
Quarterly Activity
vs Jun 30, 2026
New
3
Increased
11
Decreased
17
Sold Out
7
Unchanged
236
New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.