13F
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BERKSHIRE HATHAWAY INC

13F equity value
$263.1B
Positions
29
Top 10 concentration
90.7%
Quarters / total new picks
18 / 44
13F equity value over time
$0M$182B$364B2017201820192020202120222023202420252026

"13F equity value" = market value of this filer's US-listed long equity positions only. It excludes cash, bonds, non-US and short positions, so it understates a fund's true assets under management — often by a lot.

Not significant Verdict

13F holdings are disclosed ~45 days after quarter-end, and they never reveal when within the quarter a fund actually bought. So any 13F-based summary is structurally late and blurred — this applies to every fund, including this one.

We backtested copying it anyway. Buying this fund's new positions the day each filing went public, over 18 quarters, returned +2.0% per quarter — versus +2.5% per quarter from simply owning every 13F stock. It beat that baseline in only 44.4% of quarters (excess t = -1.51, not statistically significant). Its filings tell you what it bought — not what you should buy.

Avg 2Q excess
-4.9%
t-stat
-1.51
Quarterly win rate
44%
Annualized excess
-1.9%
$1 → follow vs universe
$1.33 vs $1.44
Cumulative return: $1 invested in new picks vs universe
1.00 20180930: universe 1.04620181231: universe 1.03520190331: universe 1.01720190930: universe 1.09320191231: universe 0.88220200930: universe 1.08220201231: universe 1.13120210930: universe 1.01620220331: universe 1.09020220930: universe 1.17120230331: universe 1.23420230630: universe 1.19020240630: universe 1.29820240930: universe 1.28720241231: universe 1.20120250630: universe 1.23920250930: universe 1.39320251231: universe 1.441 20180930: follow 0.98220181231: follow 0.93120190331: follow 0.89220190930: follow 1.08320191231: follow 1.09820200930: follow 1.08420201231: follow 1.24620210930: follow 0.96220220331: follow 0.89520220930: follow 0.98220230331: follow 1.01120230630: follow 1.04820240630: follow 1.06320240930: follow 1.06120241231: follow 1.21520250630: follow 1.20320250930: follow 1.27920251231: follow 1.328 0.81 1.18 1.56 20182019202020212022202320242025 Follow Universe

Quarterly compounding, invested quarters only · entry 47 days after quarter-end (when 13F data becomes public)

Listed as facts. See the verdict above before treating this as signal.

Top 20 holdings of 29 · 2026 Q1

Ticker Value Weight QoQ
AAPL $57.8B
22.0%
HOLD
AXP $45.9B
17.4%
HOLD
KO $30.4B
11.6%
HOLD
BAC $25.0B
9.5%
HOLD
CVX $17.5B
6.6%
TRIM
OXY $17.2B
6.6%
HOLD
GOOGL $15.6B
5.9%
ADD
CB $11.2B
4.2%
HOLD
MCO $10.8B
4.1%
HOLD
KHC $7.3B
2.8%
HOLD
DVA $4.6B
1.8%
TRIM
KR $3.6B
1.4%
HOLD
SIRI $2.9B
1.1%
HOLD
DAL $2.6B
1.0%
NEW
VRSN $2.2B
0.9%
HOLD
COF $1.3B
0.5%
HOLD
NYT $1.3B
0.5%
ADD
ALLY $1.1B
0.4%
HOLD
GOOG $1.0B
0.4%
NEW
LLYVK $996M
0.4%
TRIM

QoQ vs previous quarter's share count · NEW = new position · ADD/TRIM = ±2% shares · HOLD = unchanged.

Listed as facts. See the verdict above before treating this as signal.

New positions in 2026 Q1

DALGOOGM

Method & Limitations

Method: a "new position" = held this quarter, absent last quarter (options excluded; stocks with <50 prior holders excluded to filter spin-off artifacts). Entry 47 days after quarter-end — the first day the public could act on the filing. Benchmark = equal-weighted universe of all 13F-held stocks. Limitations: quarterly snapshots can't see intra-quarter trades; survivorship bias — funds that shut down are absent, which flatters the sample. Statistics, not advice.