NORTHWESTERN UNIVERSITY BRK/A — BERKSHIRE HATHAWAY INC DEL

Ownership history in NORTHWESTERN UNIVERSITY  ·  41 quarters on record

AI Ownership Summary

NORTHWESTERN UNIVERSITY reported BERKSHIRE HATHAWAY INC DEL (BRK/A) in 41 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 92.11% in 2026 Q1. The latest visible filing shows BRK/A at 92.11% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this BRK/A ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was NORTHWESTERN UNIVERSITY's position in BERKSHIRE HATHAWAY INC DEL, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

BRK/A was reported at 92.11% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
92.11% in 2026 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

BRK/A stock page NORTHWESTERN UNIVERSITY fund profile NORTHWESTERN UNIVERSITY full holdings
How NORTHWESTERN UNIVERSITY held BRK/A — position size vs. price
% of Fund (quarterly)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED — — — 66 — 0% 92.11% $47.4M 2026-04-16 $712700.00
2025 Q3 UNCHANGED — — — 66 — 0% 87.99% $49.8M 2025-10-29 $712900.00
2025 Q2 UNCHANGED — — — 66 — 0% 85.23% $48.1M 2025-07-16 $707681.00
2025 Q1 REDUCED — — — 66 -13 -16.5% 84.32% $52.7M 2025-04-16 $774261.00
2024 Q4 REDUCED — — — 79 -28 -26.2% 86.23% $53.8M 2025-01-28 $705000.00
2024 Q3 REDUCED — — — 107 -23 -17.7% 86.90% $74.0M 2024-11-12 $700700.00
2024 Q2 UNCHANGED — — — 130 — 0% 85.76% $80K 2024-07-29 $658060.00
2024 Q1 UNCHANGED — — — 130 — 0% 76.56% $82K 2024-04-18 $604144.00
2023 Q4 UNCHANGED — — — 130 — 0% 62.85% $71K 2024-01-11 $551695.00
32 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding BRK/A

As of 2026 Q1 — sorted by position size

Mirae Asset Global Investments Co., Ltd. 3Y 7Y 88.4% Graham Holdings Co Master Retirement Trust 3Y 84.28% University of Maryland Foundation, Inc. 3Y 56.32% Hikari Tsushin, Inc. 3Y 7Y 55.8% Rede Wealth, LLC 3Y 53.73% Hikari Power Ltd 3Y 7Y 47.49% Baldwin Investment Management, LLC 3Y 7Y 46.58% Canton Hathaway, LLC 3Y 7Y 42.02% Punch Card Management L.P. 3Y 7Y 38.47% Graham Holdings Co 3Y 31.35%

FAQ About NORTHWESTERN UNIVERSITY and BRK/A

These are the practical questions this page is built to answer before you even open the full history table.

How long has NORTHWESTERN UNIVERSITY reported owning BRK/A?

NORTHWESTERN UNIVERSITY reported BRK/A across 9 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported BRK/A position in NORTHWESTERN UNIVERSITY's portfolio?

The largest reported portfolio weight for BRK/A was 92.11% in 2026 Q1.

What is the latest reported BRK/A position on this page?

The most recent filing on this page is 2026 Q1, when NORTHWESTERN UNIVERSITY reported 66 shares, equal to 92.11% of portfolio, with an estimated market value of $47.4M.

What does the chart on this BRK/A ownership page compare?

The chart compares NORTHWESTERN UNIVERSITY's quarterly BRK/A portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did NORTHWESTERN UNIVERSITY time their BRK/A position?

Based on 13F filing dates vs. subsequent BRK/A price moves, NORTHWESTERN UNIVERSITY correctly timed 3 out of 9 reported position changes (33%). The annualised alpha on BRK/A relative to SPY over the holding period was -1.4%.

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