FIRST WILSHIRE SECURITIES MANAGEMENT INC ROCK — GIBRALTAR INDS INC

Ownership history in FIRST WILSHIRE SECURITIES MANAGEMENT INC  ·  4 quarters on record

AI Ownership Summary

FIRST WILSHIRE SECURITIES MANAGEMENT INC reported GIBRALTAR INDS INC (ROCK) in 4 quarterly 13F filings from 2025 Q3 through 2026 Q1. Peak portfolio weight reached 4.49% in 2026 Q1. The latest visible filing shows ROCK at 4.49% 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 ROCK ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was FIRST WILSHIRE SECURITIES MANAGEMENT INC's position in GIBRALTAR INDS INC, 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

ROCK was reported at 4.49% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
4.49% 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
2025 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.

ROCK stock page FIRST WILSHIRE SECURITIES MANAGEMENT INC fund profile FIRST WILSHIRE SECURITIES MANAGEMENT INC full holdings
How FIRST WILSHIRE SECURITIES MANAGEMENT INC held ROCK — position size vs. price
% of Fund (quarterly)    ROCK price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 3 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 499,923 +370,985 +287.7% 4.49% $19.9M 2026-05-12 $37.91
2025 Q4 REDUCED 26.4% -19.4% ✅ 128,938 -46,221 -26.4% 1.60% $6.4M 2026-02-12 $53.24
2025 Q3 ADDED — — — 175,159 +46,221 +35.8% 2.93% $11.0M 2025-11-14 $59.15
1 older quarter hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding ROCK

As of 2026 Q1 — sorted by position size

Expect Equity LLC 2.43% Teton Advisors, LLC 1.46% Congruence Capital, LLC 1.41% Kennondale Capital Management LLC 1.2% SG Capital Management LLC 3Y 7Y 0.62% Cascade Investment Advisors, Inc. 3Y 7Y 0.52% PALISADE CAPITAL MANAGEMENT, LP 3Y 7Y 0.48% Invenomic Capital Management LP 3Y 0.33% FRONTIER CAPITAL MANAGEMENT CO LLC 3Y 7Y 0.28% RBF Capital, LLC 3Y 7Y 0.26%

FAQ About FIRST WILSHIRE SECURITIES MANAGEMENT INC and ROCK

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

How long has FIRST WILSHIRE SECURITIES MANAGEMENT INC reported owning ROCK?

FIRST WILSHIRE SECURITIES MANAGEMENT INC reported ROCK across 3 quarterly 13F filings, from 2025 Q3 through 2026 Q1.

What was the largest reported ROCK position in FIRST WILSHIRE SECURITIES MANAGEMENT INC's portfolio?

The largest reported portfolio weight for ROCK was 4.49% in 2026 Q1.

What is the latest reported ROCK position on this page?

The most recent filing on this page is 2026 Q1, when FIRST WILSHIRE SECURITIES MANAGEMENT INC reported 499,923 shares, equal to 4.49% of portfolio, with an estimated market value of $19.9M.

What does the chart on this ROCK ownership page compare?

The chart compares FIRST WILSHIRE SECURITIES MANAGEMENT INC's quarterly ROCK 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 FIRST WILSHIRE SECURITIES MANAGEMENT INC time their ROCK position?

Based on 13F filing dates vs. subsequent ROCK price moves, FIRST WILSHIRE SECURITIES MANAGEMENT INC correctly timed 2 out of 3 reported position changes (67%).

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