13F
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Port Capital LLC

13F equity value
$2.2B
Positions
82
Top 10 concentration
50.2%
Quarters / total new picks
30 / 151
13F equity value over time
$0M$1B$2B2017201820192020202120222023202420252026

"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 30 quarters, returned +2.8% per quarter — versus +2.6% per quarter from simply owning every 13F stock. It beat that baseline in only 50.0% of quarters (excess t = 0.10, not statistically significant). Its filings tell you what it bought — not what you should buy.

Avg 2Q excess
+0.2%
t-stat
0.10
Quarterly win rate
50%
Annualized excess
-0.7%
$1 → follow vs universe
$1.79 vs $1.88
Cumulative return: $1 invested in new picks vs universe
1.00 20180331: universe 1.04120180630: universe 0.95920180930: universe 1.00320181231: universe 0.99220190331: universe 0.97520190630: universe 1.04820190930: universe 1.12720191231: universe 0.90920200331: universe 1.09620200630: universe 1.21120200930: universe 1.48520201231: universe 1.55320210331: universe 1.56620210630: universe 1.69220210930: universe 1.51920211231: universe 1.29220220331: universe 1.38720220630: universe 1.28520221231: universe 1.19420230331: universe 1.25820230630: universe 1.21320230930: universe 1.37720231231: universe 1.43820240331: universe 1.47120240630: universe 1.60420240930: universe 1.59020241231: universe 1.48420250331: universe 1.61820250930: universe 1.82020251231: universe 1.882 20180331: follow 1.05020180630: follow 0.98420180930: follow 1.05220181231: follow 1.13720190331: follow 1.12420190630: follow 1.23720190930: follow 1.36820191231: follow 1.04720200331: follow 1.35320200630: follow 1.48420200930: follow 1.69520201231: follow 1.76320210331: follow 1.64220210630: follow 1.71120210930: follow 1.52020211231: follow 1.24420220331: follow 1.38120220630: follow 0.98320221231: follow 0.92620230331: follow 0.86120230630: follow 0.77520230930: follow 0.85720231231: follow 0.98820240331: follow 1.06020240630: follow 1.14120240930: follow 1.17420241231: follow 1.27320250331: follow 1.34620250930: follow 1.44820251231: follow 1.792 0.71 1.37 2.03 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 82 · 2026 Q1

Ticker Value Weight QoQ
RBC $187M
8.3%
TRIM
HEI/A $174M
7.8%
TRIM
TDY $152M
6.8%
ADD
APH $103M
4.6%
TRIM
AME $93M
4.1%
TRIM
SPXC $92M
4.1%
HOLD
ORLY $87M
3.9%
TRIM
LIN $85M
3.8%
TRIM
RLI $79M
3.5%
HOLD
GGG $78M
3.5%
ADD
PH $76M
3.4%
TRIM
WTS $75M
3.3%
HOLD
SSD $70M
3.1%
HOLD
ICE $58M
2.6%
TRIM
CACI $56M
2.5%
HOLD
ATMU $52M
2.3%
ADD
CPRT $50M
2.2%
ADD
ULS $50M
2.2%
HOLD
MA $49M
2.2%
TRIM
ACGL $49M
2.2%
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

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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.