Manager × security

Stolper Co BRK.B holdings history

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BERKSHIRE HATHAWAY INC-CL B · CUSIP 084670702 · CIK 1808195

Some filings reported values in thousands; those figures were scaled ×1000 to dollars.
This is the oldest quarter open without an account, so changes against the quarter before it are withheld. Sign in to see them.
Citable facts

As of 2026-06-30, Stolper Co reported 39.84K BRK.B (shares), valued at $19.94M, or 5.15% of its reported non-derivative portfolio. Filed 2026-07-14.

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Portfolio weight and quantity history
Reported portfolio weight
5.15%
Shares
39.84K
39,843
Reported value
$19.94M
USD

Shares decreased 52.36%; reported value increased 2259.41%, and weight changed +4.91 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.

Left: % · Right: Shares · Independently scaled axes

Exact data and methodology

Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.

QuarterWeightQuantitySource
Q2 20265.15%39,843SEC filing ↗Filed Jul 14, 2026
Q1 20260.24%83,639SEC filing ↗Filed Apr 13, 2026
Q4 20255.61%37,858SEC filing ↗Filed Jan 12, 2026
Q3 20255.75%37,719SEC filing ↗Filed Oct 10, 2025Amended
Q2 20256.10%38,252SEC filing ↗Filed Jul 10, 2025
Q1 20256.82%39,055SEC filing ↗Filed Apr 8, 2025
Q4 20246.00%39,725SEC filing ↗Filed Jan 14, 2025
Q3 20246.05%40,202SEC filing ↗Filed Oct 9, 2024
Q2 20245.86%40,889SEC filing ↗Filed Aug 8, 2024
Q1 20246.09%40,143SEC filing ↗Filed Apr 9, 2024
Q4 20235.78%40,214SEC filing ↗Filed Jan 12, 2024
Q3 20236.09%40,130SEC filing ↗Filed Oct 10, 2023

History & evidence by quarter

QuarterWeightQuantityValueChange explainedSource
Q3 20236.09%40,130$14.06MThe prior quarter is outside the free window. Sign in for the comparison.SEC filing ↗
Filed Oct 10, 2023
Q4 20235.78%40,214$14.34MShares increased 0.21%; reported value increased 2.03%, and weight changed -0.31 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 12, 2024
Q1 20246.09%40,143$16.88MShares decreased 0.18%; reported value increased 17.70%, and weight changed +0.31 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Apr 9, 2024
Q2 20245.86%40,889$16.63MShares increased 1.86%; reported value decreased 1.46%, and weight changed -0.23 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 8, 2024
Q3 20246.05%40,202$18.50MShares decreased 1.68%; reported value increased 11.24%, and weight changed +0.19 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Oct 9, 2024
Q4 20246.00%39,725$18.01MShares decreased 1.19%; reported value decreased 2.68%, and weight changed -0.05 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 14, 2025
Q1 20256.82%39,055$20.80MShares decreased 1.69%; reported value increased 15.51%, and weight changed +0.82 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Apr 8, 2025
Q2 20256.10%38,252$18.58MShares decreased 2.06%; reported value decreased 10.66%, and weight changed -0.72 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jul 10, 2025
Q3 20255.75%37,719$18.96MShares decreased 1.39%; reported value increased 2.05%, and weight changed -0.35 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Oct 10, 2025
Q4 20255.61%37,858$19.03MShares increased 0.37%; reported value increased 0.35%, and weight changed -0.14 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 12, 2026
Q1 20260.24%83,639$845.00KShares increased 120.93%; reported value decreased 95.56%, and weight changed -5.37 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Apr 13, 2026
Q2 20265.15%39,843$19.94MShares decreased 52.36%; reported value increased 2259.41%, and weight changed +4.91 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jul 14, 2026
Stolper Co · BERKSHIRE HATHAWAY INC-CL B

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

13F reports quarter-end long positions in securities traded on US exchanges, filed by managers holding at least $100 million of such securities; it is not the manager's full portfolio, not assets under management, and value changes are not returns. Weights use the reported total value as denominator. Option rows show notional value, not premium or net exposure. Amendments are merged into the quarter when Akkru could match them.