DIMENSIONAL FUND ADVISORS LP SEG — D SEAGATE TECHNOLOGY COM

Ownership history in DIMENSIONAL FUND ADVISORS LP  ·  10 quarters on record

AI Ownership Summary

DIMENSIONAL FUND ADVISORS LP reported D SEAGATE TECHNOLOGY COM (SEG) in 10 quarterly 13F filings from 2024 Q3 through 2026 Q1. The latest visible filing shows SEG at 0.00% 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 SEG ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was DIMENSIONAL FUND ADVISORS LP's position in D SEAGATE TECHNOLOGY COM, 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

SEG was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2024 Q4

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

Time in book
Holding Window
2024 Q3 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.

SEG stock page DIMENSIONAL FUND ADVISORS LP fund profile DIMENSIONAL FUND ADVISORS LP full holdings
How DIMENSIONAL FUND ADVISORS LP held SEG — position size vs. price
% of Fund (quarterly)    SEG price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 7 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 455,147 -64,751 -12.5% 0.00% $9.8M 2026-05-07 $22.24
2025 Q4 REDUCED 10.3% +8.7% ❌ 519,898 -59,425 -10.3% 0.00% $10.3M 2026-02-12 $20.32
2025 Q3 REDUCED — — — 579,323 -3,964 -0.7% 0.00% $13.3M 2025-11-12 $23.05
2025 Q2 REDUCED — — — 583,287 -9,220 -1.6% 0.00% $10.9M 2025-08-12 $23.50
2025 Q1 REDUCED — — — 592,507 -736 -0.1% 0.00% $12.7M 2025-05-13 $19.44
2024 Q4 ADDED — — — 593,243 +321,450 +118.3% 0.00% $16.6M 2025-02-13 $26.53
2024 Q3 ADDED — — — 271,793 +220,293 +427.8% 0.00% $7.5M 2024-11-07 $28.92
3 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding SEG

As of 2026 Q1 — sorted by position size

GATE CITY CAPITAL MANAGEMENT, LLC 5.76% KAHN BROTHERS GROUP INC 3Y 7Y 3.4% Rangeley Capital, LLC 3.2% Solas Capital Management, LLC 3Y 7Y 2.75% Peapod Lane Capital LLC 1.62% Pershing Square Capital Management, L.P. 3Y 7Y 0.79% Gem Investment Advisors, LLC 0.63% O'Keefe Stevens Advisory, Inc. 3Y 0.25% Marnell Management LLC 0.24% Rubric Capital Management LP 3Y 7Y 0.13%

FAQ About DIMENSIONAL FUND ADVISORS LP and SEG

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

How long has DIMENSIONAL FUND ADVISORS LP reported owning SEG?

DIMENSIONAL FUND ADVISORS LP reported SEG across 7 quarterly 13F filings, from 2024 Q3 through 2026 Q1.

What was the largest reported SEG position in DIMENSIONAL FUND ADVISORS LP's portfolio?

The largest reported portfolio weight for SEG was 0.00% in 2024 Q4.

What is the latest reported SEG position on this page?

The most recent filing on this page is 2026 Q1, when DIMENSIONAL FUND ADVISORS LP reported 455,147 shares, equal to 0.00% of portfolio, with an estimated market value of $9.8M.

What does the chart on this SEG ownership page compare?

The chart compares DIMENSIONAL FUND ADVISORS LP's quarterly SEG 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 DIMENSIONAL FUND ADVISORS LP time their SEG position?

Based on 13F filing dates vs. subsequent SEG price moves, DIMENSIONAL FUND ADVISORS LP correctly timed 2 out of 6 reported position changes (33%). The annualised alpha on SEG relative to SPY over the holding period was -27.8%.

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