Form 13-F position report

BERKSHIRE HATHWY INC(HLDG CO)B

Reported by PROSPECTOR PARTNERS LLC

BRK-B CUSIP 084670702 Manager CIK 0001080380

Reported 162,000 shares, down 12,960 (7.4%) from the prior quarter.

Reported value 9.3%; share count -7.4% vs. the prior quarter.

Reduced
% of reported 13F value 7.07% This manager · Q1 2022
Shares 162,000 Quarter-end amount reported
Reported value $57,171,000 Fair value at quarter end
Consecutive quarters held 36 Through Q1 2022

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2021-03-31 41279000
2021-06-30 45215000
2021-09-30 43922000
2021-12-31 52313000
2022-03-31 57171000
2022-06-30 39334000
2022-09-30 38753000
2022-12-31 44830657
2023-03-31 35233127
2023-06-30 32796698
2023-09-30 33736692
2023-12-31 34381311
2024-03-31 32930921
2024-06-30 31856508
2024-09-30 36042961
2024-12-31 29377077
2025-03-31 34516510
2025-06-30 31482754
2025-09-30 32582579
2025-12-31 4523850

Quarterly position history

How this manager's reported quarter-end position changed over time.

20 quarters
Quarterly reported position history for BERKSHIRE HATHWY INC(HLDG CO)B held by PROSPECTOR PARTNERS LLC.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q4 2025 Reduced 9,000 -55,810 (-86.1%) 9.69% $4,523,850 2026-02-13
Q3 2025 Unchanged 64,810 0 (0.0%) 3.89% $32,582,579 2025-11-07
Q2 2025 Unchanged 64,810 0 (0.0%) 3.6% $31,482,754 2025-08-08
Q1 2025 Unchanged 64,810 0 (0.0%) 3.89% $34,516,510 2025-05-13
Q4 2024 Reduced 64,810 -13,500 (-17.2%) 3.26% $29,377,077 2025-02-13
Q3 2024 Unchanged 78,310 0 (0.0%) 3.77% $36,042,961 2024-11-13
Q2 2024 Unchanged 78,310 0 (0.0%) 3.56% $31,856,508 2024-08-13
Q1 2024 Reduced 78,310 -18,088 (-18.8%) 3.62% $32,930,921 2024-05-09
Q4 2023 Added 96,398 +90 (0.1%) 4.29% $34,381,311 2024-02-09
Q3 2023 Added 96,308 +130 (0.1%) 4.54% $33,736,692 2023-11-13
Q2 2023 Reduced 96,178 -17,930 (-15.7%) 4.58% $32,796,698 2023-08-10
Q1 2023 Reduced 114,108 -31,022 (-21.4%) 4.9% $35,233,127 2023-05-08
Q4 2022 Unchanged 145,130 0 (0.0%) 6.13% $44,830,657 2023-02-15
Q3 2022 Added 145,130 +1,060 (0.7%) 5.77% $38,753,000 2022-11-10
Q2 2022 Reduced 144,070 -17,930 (-11.1%) 5.73% $39,334,000 2022-08-11
Q1 2022 Reduced 162,000 -12,960 (-7.4%) 7.07% $57,171,000 2022-05-12
Q4 2021 Added 174,960 +14,040 (8.7%) 6.05% $52,313,000 2022-02-11
Q3 2021 Reduced 160,920 -1,770 (-1.1%) 5.64% $43,922,000 2021-11-10
Q2 2021 Added 162,690 +1,110 (0.7%) 5.69% $45,215,000 2021-08-11
Q1 2021 Reduced 161,580 -11,625 (-6.7%) 5.28% $41,279,000 2021-05-13
Five years are shown. A free account unlocks the complete reported history. Unlock full history

Who else reported the position

3444 managers reported BERKSHIRE HATHWY INC(HLDG CO)B for Q1 2022.

Managers reporting BERKSHIRE HATHWY INC(HLDG CO)B in Q1 2022.
Manager Activity Shares Change % of reported 13F Reported value Tenure
VANGUARD GROUP INC Added 135,133,046 +3,358,768 1.13% $47,689,804,000 36 qtrs
BlackRock Inc Added 102,305,819 +1,194,693 0.97% $36,104,748,000 36 qtrs
STATE STREET CORPORATION Added 78,741,939 +1,054,623 1.37% $27,788,818,000 26 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 30,377,649 +386,411 1.34% $10,695,563,000 36 qtrs
BILL & MELINDA GATES FOUNDATION TRUST Reduced 28,686,679 -5,000,000 51.22% $10,123,816,000 36 qtrs
NORTHERN TRUST CORPORATION Reduced 17,157,956 -262,783 1.07% $6,055,214,000 36 qtrs
THE BANK OF NEW YORK MELLON CORPORATION Added 13,978,365 +71,691 0.96% $4,933,103,000 36 qtrs
MORGAN STANLEY Added 12,371,032 +244,807 0.59% $4,365,863,000 36 qtrs
FMR LLC Added 10,910,893 +853,259 0.31% $3,850,563,000 36 qtrs
Bank of America Corporation Added 9,458,834 +244,917 0.32% $3,338,118,000 36 qtrs
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
March 31, 2022
Filed
May 12, 2022
Filing type
13F-HR
Position type
CL B NEW

Voting authority reported

Sole
162,000
Shared
0
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.