L3VLUP
ProSign in

BRK-B in the 13F filings

Berkshire Hathaway Inc Del · CUSIP 084670702

Sector · InsuranceTheme · Financial services· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Q3 2026: 5 of 95 managers have filed so far; the filing deadline is 16 November 2026. Its figures cover those filers only, so it is not yet a picture of the tracked managers.

Quarter end
30 Sep 2026
the date the book describes
Filed
9 Nov 2026
latest of these filings; the earliest 30 Oct 2026
Managers listing it
4
at least, of 95 tracked, among listed positions
Comparable managers
5
filed both Q2 2026 and Q3 2026; 4 listed it in both
Shares listed
3,022,278
combined, among listed positions
Reported value
$1.5bn
combined, at the quarter end

Among the 5 comparable managers: 1 buyer (opened or added shares) and 2 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -330,059.

Managers listing BRK-B in Q3 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q2 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

4 of 4 holders

ActionFiling
Markel Group Inc1,531,971$763m5.94%Held030 Oct 2026 (the filing on sec.gov)
Acadian Asset Management LLC796,248$396m0.46%Trimmed-403,9919 Nov 2026 (the filing on sec.gov)
Squarepoint Ops LLC683,666$340m0.37%Added+92,3189 Nov 2026 (the filing on sec.gov)
Baillie Gifford & Co10,393$5.2munder 0.1%Trimmed-18,3869 Nov 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q2 2026 to Q3 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (0)

No new position among listed positions.

Exited (0)

No exit shown by a manager’s own filing.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
33 in Q4 2024 to 4 in Q3 2026

Tracked managers listing it, at least.

02040602014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
BRK-B by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201324$6.4bnn.a.n.a.
Q3 201330$6.4bnn.a.n.a.
Q4 201326$7.1bnn.a.n.a.
Q1 201425$8.0bnn.a.n.a.
Q2 201428$8.3bnn.a.n.a.
Q3 201427$8.8bnn.a.n.a.
Q4 201426$8.3bnn.a.n.a.
Q1 201529$8.6bnn.a.n.a.
Q2 201532$8.1bnn.a.n.a.
Q3 201523$8.5bnn.a.n.a.
Q4 201526$8.9bnn.a.n.a.
Q1 201624$8.8bnn.a.n.a.
Q2 201625$8.7bnn.a.n.a.
Q3 201627$8.5bnn.a.n.a.
Q4 201629$10.3bnn.a.n.a.
Q1 201727$9.8bnn.a.n.a.
Q2 201727$10.1bnn.a.n.a.
Q3 201725$11.3bnn.a.n.a.
Q4 201728$11.9bnn.a.n.a.
Q1 201828$11.7bnn.a.n.a.
Q2 201825$11.3bnn.a.n.a.
Q3 201827$12.5bnn.a.n.a.
Q4 201827$12.6bnn.a.n.a.
Q1 201931$12.9bnn.a.n.a.
Q2 201927$13.8bnn.a.n.a.
Q3 201927$13.8bnn.a.n.a.
Q4 201926$15.8bnn.a.n.a.
Q1 202035$12.2bnn.a.n.a.
Q2 202032$12.2bnn.a.n.a.
Q3 202028$12.7bnn.a.n.a.
Q4 202032$12.3bnn.a.n.a.
Q1 202131$12.3bnn.a.n.a.
Q2 202133$13.1bnn.a.n.a.
Q3 202133$13.3bnn.a.n.a.
Q4 202134$14.4bnn.a.n.a.
Q1 202229$16.7bnn.a.n.a.
Q2 202238$14.5bnn.a.n.a.
Q3 202228$14.0bnn.a.n.a.
Q4 202231$16.4bnn.a.n.a.
Q1 202326$16.8bnn.a.n.a.
Q2 202329$16.8bnn.a.n.a.
Q3 202334$17.2bnn.a.n.a.
Q4 202329$16.8bn1318
Q1 202431$19.3bn1514
Q2 202432$18.7bn1516
Q3 202427$21.2bn1512
Q4 202433$21.1bn1912
Q1 202531$26.6bn1615
Q2 202539$21.6bn2117
Q3 202541$23.7bn1819
Q4 202536$23.3bn1925
Q1 202636$26.6bn2518
Q2 202641$28.5bn2221
Q3 20264$1.5bn12

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

BRK-B and V →BRK-B and AXP →BRK-B and BAC →Choose a stock to compare with BRK-B →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own BRK-B, latest filings →Back to the 13F Explorer →