WINMILL & CO. INC PSA PUBLIC STORAGE

Ownership history in WINMILL & CO. INC  ·  26 quarters on record

AI Ownership Summary

WINMILL & CO. INC reported PUBLIC STORAGE (PSA) in 26 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 0.21% in 2024 Q3. The latest visible filing shows PSA at 0.12% 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 PSA ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was WINMILL & CO. INC's position in PUBLIC STORAGE, 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
2025 Q4

PSA was reported at 0.12% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.21% in 2024 Q3

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 2025 Q4

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.

How WINMILL & CO. INC held PSA — position size vs. price
% of Fund (quarterly)    PSA price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 UNCHANGED 1,700 0% 0.12% $441K 2026-02-14 (Est.) $297.32
2025 Q3 UNCHANGED 1,700 0% 0.12% $491K 2025-11-13 $268.55
2025 Q2 UNCHANGED 1,700 0% 0.14% $499K 2025-08-01 $270.27
2025 Q1 UNCHANGED 1,700 0% 0.15% $509K 2025-05-14 $286.08
2024 Q4 UNCHANGED 1,700 0% 0.16% $509K 2025-02-13 $286.15
2024 Q3 UNCHANGED 1,700 0% 0.21% $619K 2024-11-13 $315.19
2024 Q2 UNCHANGED 1,700 0% 0.17% $489K 2024-08-13 $295.30
2024 Q1 UNCHANGED 1,700 0% 0.14% $493K 2024-05-14 $258.27
2023 Q4 UNCHANGED 1,700 0% 0.17% $518K 2024-02-13 $252.70
17 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

FAQ About WINMILL & CO. INC and PSA

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

How long has WINMILL & CO. INC reported owning PSA?

WINMILL & CO. INC reported PSA across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported PSA position in WINMILL & CO. INC's portfolio?

The largest reported portfolio weight for PSA was 0.21% in 2024 Q3.

What is the latest reported PSA position on this page?

The most recent filing on this page is 2025 Q4, when WINMILL & CO. INC reported 1,700 shares, equal to 0.12% of portfolio, with an estimated market value of $441K.

What does the chart on this PSA ownership page compare?

The chart compares WINMILL & CO. INC's quarterly PSA 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.

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