Mesirow Financial Investment Management, Inc. TSSI — TSS INC DEL

Ownership history in Mesirow Financial Investment Management, Inc.  ·  6 quarters on record

AI Ownership Summary

Mesirow Financial Investment Management, Inc. reported TSS INC DEL (TSSI) in 6 quarterly 13F filings from 2024 Q4 through 2026 Q2. Peak portfolio weight reached 0.03% in 2025 Q2. The latest visible filing shows TSSI 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.

What this TSSI ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Mesirow Financial Investment Management, Inc.'s position in TSS 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 Q2

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

High-water mark
Peak Conviction
0.03% in 2025 Q2

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

Time in book
Holding Window
2024 Q4 to 2026 Q2

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.

TSSI stock page Mesirow Financial Investment Management, Inc. fund profile Mesirow Financial Investment Management, Inc. full holdings
How Mesirow Financial Investment Management, Inc. held TSSI — position size vs. price
% of Fund (quarterly)    TSSI price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 6 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 UNCHANGED — — — 22,643 — 0% 0.00% $279K 2026-07-22 $10.15
2026 Q1 REDUCED 23.6% -7.8% ✅ 22,643 -7,000 -23.6% 0.00% $295K 2026-04-21 $14.48
2025 Q3 REDUCED 40.3% -61.8% ✅ 29,643 -20,000 -40.3% 0.01% $537K 2025-11-12 $16.16
2025 Q2 UNCHANGED — — — 49,643 — 0% 0.03% $1.4M 2025-08-04 $29.26
2025 Q1 REDUCED 53.7% +267.3% ❌ 49,643 -57,643 -53.7% 0.01% $390K 2025-05-08 $7.36
2024 Q4 INITIATED — — — 107,286 — — 0.03% $1.3M 2025-02-07 $14.92

🏢 Other funds also holding TSSI

As of 2026 Q3 — sorted by position size

GAMMA Investing LLC 0.0% TOTH FINANCIAL ADVISORY CORP 3Y 7Y 0.0% Farther Finance Advisors, LLC 3Y 0.0%

FAQ About Mesirow Financial Investment Management, Inc. and TSSI

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

How long has Mesirow Financial Investment Management, Inc. reported owning TSSI?

Mesirow Financial Investment Management, Inc. reported TSSI across 6 quarterly 13F filings, from 2024 Q4 through 2026 Q2.

What was the largest reported TSSI position in Mesirow Financial Investment Management, Inc.'s portfolio?

The largest reported portfolio weight for TSSI was 0.03% in 2025 Q2.

What is the latest reported TSSI position on this page?

The most recent filing on this page is 2026 Q2, when Mesirow Financial Investment Management, Inc. reported 22,643 shares, equal to 0.00% of portfolio, with an estimated market value of $279K.

What does the chart on this TSSI ownership page compare?

The chart compares Mesirow Financial Investment Management, Inc.'s quarterly TSSI 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 Mesirow Financial Investment Management, Inc. time their TSSI position?

Based on 13F filing dates vs. subsequent TSSI price moves, Mesirow Financial Investment Management, Inc. correctly timed 2 out of 4 reported position changes (50%). The annualised alpha on TSSI relative to SPY over the holding period was -34.8%.

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