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Port Capital Portfolio holdings

AUM $2.25B
1-Year Est. Return 13.28%
This Fund
S&P 500
This Quarter Est. Return
+3.29%
1 Year Est. Return
+13.28%
3 Year Est. Return
+65.31%
5 Year Est. Return
+99.15%
10 Year Est. Return
–
AUM
$2.4B
AUM Growth
+$47.8M
Cap. Flow
+$3.09M
Cap. Flow %
0.13%
Top 10 Hldgs %
48.08%
Holding
89
New
4
Increased
32
Reduced
27
Closed
5

Top Buys

Rank Stock Value
1
SPGI icon
S&P Global
SPGI
+$25.7M
2
ORI icon
Old Republic International
ORI
+$18.7M
3
ATMU icon
Atmus Filtration Technologies
ATMU
+$18.1M
4
HEI.A icon
HEICO Corp Class A
HEI.A
+$1.3M
5
RBC icon
RBC Bearings
RBC
+$1.28M

Top Sells

Rank Stock Value
1
ONTO icon
Onto Innovation
ONTO
+$15.8M
2
SIGI icon
Selective Insurance
SIGI
+$13.5M
3
IEX icon
IDEX
IEX
+$12.1M
4
APH icon
Amphenol
APH
+$10.2M
5
ROP icon
Roper Technologies
ROP
+$5.53M

Sector Composition

Rank Sector Weight
1 Industrials 37.77%
2 Financials 25.34%
3 Technology 18.32%
4 Materials 7.86%
5 Consumer Discretionary 7.34%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
HEI.A icon
1
HEICO Corp Class A
HEI.A
$35.4B
$218M 9.07%
856,191
+5,204
+0.6% +$1.3M
RBC icon
2
RBC Bearings
RBC
$18.8B
$144M 5.98%
367,848
+3,300
+0.9% +$1.28M
APH icon
3
Amphenol
APH
$188B
$133M 5.56%
1,078,749
-93,018
-8% -$10.2M
TDY icon
4
Teledyne Technologies
TDY
$30.4B
$114M 4.75%
194,309
+2,272
+1% +$1.24M
ORLY icon
5
O'Reilly Automotive
ORLY
$72.4B
$105M 4.37%
972,592
+2,352
+0.2% +$236K
RLI icon
6
RLI Corp
RLI
$5.68B
$100M 4.18%
1,538,043
-5,943
-0.4% -$402K
SPXC icon
7
SPX Corp
SPXC
$11B
$85.8M 3.57%
459,209
+3,598
+0.8% +$665K
PGR icon
8
Progressive
PGR
$124B
$85.4M 3.56%
345,935
-284
-0.1% -$70K
AME icon
9
Ametek
AME
$55.5B
$85.1M 3.55%
452,594
-23,682
-5% -$4.36M
LIN icon
10
Linde
LIN
$237B
$83.6M 3.48%
176,019
+150
+0.1% +$71K
GGG icon
11
Graco
GGG
$12.9B
$73.2M 3.05%
861,083
+8,650
+1% +$740K
WTS icon
12
Watts Water Technologies
WTS
$11.5B
$70.2M 2.92%
251,206
+2,378
+1% +$638K
SSD icon
13
Simpson Manufacturing
SSD
$7.98B
$68M 2.84%
406,210
+3,825
+1% +$685K
CPRT icon
14
Copart
CPRT
$25.9B
$64.3M 2.68%
1,430,014
+17,195
+1% +$810K
ICE icon
15
Intercontinental Exchange
ICE
$82.4B
$64M 2.67%
379,956
+491
+0.1% +$87.7K
PH icon
16
Parker-Hannifin
PH
$125B
$63M 2.63%
83,126
+158
+0.2% +$117K
MA icon
17
Mastercard
MA
$477B
$62.9M 2.62%
110,579
+191
+0.2% +$110K
CACI icon
18
CACI
CACI
$10.8B
$59.2M 2.47%
118,661
+1,225
+1% +$592K
ACGL icon
19
Arch Capital
ACGL
$36.1B
$59M 2.46%
650,272
-1,374
-0.2% -$123K
WINA icon
20
Winmark
WINA
$1.19B
$48.8M 2.04%
98,118
-10,043
-9% -$4.31M
KNSL icon
21
Kinsale Capital Group
KNSL
$7.95B
$46.6M 1.94%
109,693
+1,075
+1% +$487K
ULS icon
22
UL Solutions
ULS
$17.2B
$44.3M 1.85%
625,325
+6,350
+1% +$433K
FISV
23
Fiserv Inc
FISV
$27.2B
$43.5M 1.81%
337,120
+935
+0.3% +$134K
CP icon
24
Canadian Pacific Kansas City
CP
$82B
$39.4M 1.64%
528,799
+2,016
+0.4% +$154K
V icon
25
Visa
V
$677B
$38.4M 1.6%
112,492
+104
+0.1% +$36K
1
2 3 4

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Port Capital's Q3 2025 Portfolio in Review

As of Q3 2025, Port Capital held 89 positions worth $2.4B, up 2% from $2.35B the previous quarter. Its ten largest holdings account for 48% of the portfolio.

Port Capital's Q3 2025 filing shows 4 new, 32 increased, 27 reduced and 5 closed positions. Its largest new stake was S&P Global: 47,910 shares worth $23.3M. The largest sale was Onto Innovation, an estimated $15.8M.

By sector, the portfolio is most concentrated in Industrials at 38% of assets, down from 39% a quarter earlier, followed by Financials and Technology.

  • Port Capital's largest Q3 2025 buy was S&P Global: 47,910 shares worth $23.3M.
  • Port Capital added most to HEICO Corp Class A in Q3 2025, an estimated $1.3M increase.
  • Port Capital's biggest Q3 2025 reduction was IDEX, cutting an estimated $12.1M.
  • Port Capital fully exited Onto Innovation in Q3 2025, selling an estimated $15.8M.
  • Port Capital's ten largest holdings make up 48% of its $2.4B portfolio in Q3 2025.
  • Port Capital opened 4 new positions and closed 5 in Q3 2025.
  • Port Capital's portfolio value rose 2% quarter-over-quarter to $2.4B.

Based on Port Capital's 13F filing for Q3 2025, filed 14 Nov 2025.