East Coast Asset Management, LLC.

Q3 2025 13F Holdings

  • Location
    essex, MA
  • Num holdings

    68

  • Value ($000)

    $319,179

  • Date Filed
    11/14/2025
  • Form type
    13F-HR
  • CIK
    0001579254
  • All SEC filings
  • Note
    Holdings aggregated across “other managers” listed in original SEC filing, see here for detailed holdings broken out by other managers
Compare Q3 2025 to
Select Quarter
Issuer Name
Class
CUSIP
VALUE
%
Shares
Principal
Option Type
G
GOOG

ALPHABET INC

CAP STK CL C
02079K107
$48.76M
15 %

200,218

---

PERIMETER SOLUTIONS INC

COMMON STOCK
71385M107
$35.24M
11 %

1,573,973

---

TRANSDIGM GROUP INC

COM
893641100
$30.83M
10 %

23,387

M
META

META PLATFORMS INC

CL A
30303M102
$30.75M
10 %

41,867

T
TSLA

TESLA INC

COM
88160R101
$30.43M
10 %

68,422

B
BRK.B

BERKSHIRE HATHAWAY INC DEL

CL B NEW
084670702
$15.93M
5 %

31,695

A
AMZN

AMAZON COM INC

COM
023135106
$13.48M
4 %

61,372

M
MA

MASTERCARD INCORPORATED

CL A
57636Q104
$13.25M
4 %

23,303

A
AAPL

APPLE INC

COM
037833100
$10.02M
3 %

39,347

W
WWD

WOODWARD INC

COM
980745103
$7.40M
2 %

29,284

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