FIRST WILSHIRE SECURITIES MANAGEMENT INC SIGA — SIGA TECHNOLOGIES INC

Ownership history in FIRST WILSHIRE SECURITIES MANAGEMENT INC  ·  17 quarters on record

AI Ownership Summary

FIRST WILSHIRE SECURITIES MANAGEMENT INC reported SIGA TECHNOLOGIES INC (SIGA) in 17 quarterly 13F filings from 2024 Q1 through 2026 Q1. Peak portfolio weight reached 6.65% in 2024 Q1. The latest visible filing shows SIGA at 1.07% 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 SIGA 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 SIGA TECHNOLOGIES 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

SIGA was reported at 1.07% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
6.65% in 2024 Q1

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

Time in book
Holding Window
2024 Q1 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.

SIGA stock page FIRST WILSHIRE SECURITIES MANAGEMENT INC fund profile FIRST WILSHIRE SECURITIES MANAGEMENT INC full holdings
How FIRST WILSHIRE SECURITIES MANAGEMENT INC held SIGA — position size vs. price
% of Fund (quarterly)    SIGA 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)
2026 Q1 ADDED — — — 890,498 +206,445 +30.2% 1.07% $4.8M 2026-05-12 $4.45
2025 Q4 REDUCED — — — 684,053 -3,844 -0.6% 1.05% $4.2M 2026-02-12 $5.91
2025 Q3 REDUCED — — — 687,897 -9,312 -1.3% 1.67% $6.3M 2025-11-14 $5.31
2025 Q2 REDUCED 56.1% +37.4% ❌ 697,209 -889,640 -56.1% 1.24% $4.5M 2025-08-14 $7.59
2025 Q1 REDUCED 33.2% +31.4% ❌ 1,586,849 -787,487 -33.2% 2.49% $8.7M 2025-05-14 $5.25
2024 Q4 REDUCED — — — 2,374,336 -64,293 -2.6% 3.88% $14.3M 2025-02-12 $4.89
2024 Q3 REDUCED 7.5% -12.4% ✅ 2,438,629 -197,956 -7.5% 4.63% $16.5M 2024-11-14 $5.05
2024 Q2 REDUCED — — — 2,636,585 -17,670 -0.7% 6.12% $20.0M 2024-08-14 $9.59
2024 Q1 ADDED — — — 2,654,255 +292,148 +12.4% 6.65% $22.7M 2024-05-15 $6.25
8 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding SIGA

As of 2026 Q1 — sorted by position size

AltraVue Capital, LLC 3Y 7Y 1.12% SummerHaven Investment Management, LLC 3Y 0.33% DENALI ADVISORS LLC 3Y 7Y 0.26% Legato Capital Management LLC 3Y 7Y 0.25% Uniplan Investment Counsel, Inc. 3Y 7Y 0.2% Significant Wealth Partners LLC 0.15% October Effect Ltd 0.13% WASHINGTON GROWTH STRATEGIES LLC 0.09% EntryPoint Capital, LLC 0.06% State of Wyoming 3Y 0.05%

FAQ About FIRST WILSHIRE SECURITIES MANAGEMENT INC and SIGA

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 SIGA?

FIRST WILSHIRE SECURITIES MANAGEMENT INC reported SIGA across 9 quarterly 13F filings, from 2024 Q1 through 2026 Q1.

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

The largest reported portfolio weight for SIGA was 6.65% in 2024 Q1.

What is the latest reported SIGA position on this page?

The most recent filing on this page is 2026 Q1, when FIRST WILSHIRE SECURITIES MANAGEMENT INC reported 890,498 shares, equal to 1.07% of portfolio, with an estimated market value of $4.8M.

What does the chart on this SIGA ownership page compare?

The chart compares FIRST WILSHIRE SECURITIES MANAGEMENT INC's quarterly SIGA 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 SIGA position?

Based on 13F filing dates vs. subsequent SIGA price moves, FIRST WILSHIRE SECURITIES MANAGEMENT INC correctly timed 11 out of 16 reported position changes (69%). The annualised alpha on SIGA relative to SPY over the holding period was -41.3%.

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