Mesirow Financial Investment Management, Inc. NAMS — NEWAMSTERDAM PHARMA COMPANY

Ownership history in Mesirow Financial Investment Management, Inc.  ·  4 quarters on record

AI Ownership Summary

Mesirow Financial Investment Management, Inc. reported NEWAMSTERDAM PHARMA COMPANY (NAMS) in 4 quarterly 13F filings from 2025 Q3 through 2026 Q2. Peak portfolio weight reached 0.01% in 2026 Q1. The latest visible filing shows NAMS 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 NAMS 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 NEWAMSTERDAM PHARMA COMPANY, 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

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

High-water mark
Peak Conviction
0.01% 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 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.

NAMS stock page Mesirow Financial Investment Management, Inc. fund profile Mesirow Financial Investment Management, Inc. full holdings
How Mesirow Financial Investment Management, Inc. held NAMS — position size vs. price
% of Fund (quarterly)    NAMS price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 4 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 REDUCED 51.6% -30.4% ✅ 7,465 -7,965 -51.6% 0.00% $253K 2026-07-22 $31.70
2026 Q1 ADDED — — — 15,430 +7,215 +87.8% 0.01% $494K 2026-04-21 $32.48
2025 Q4 UNCHANGED — — — 8,215 — 0% 0.01% $288K 2026-02-05 $32.06
2025 Q3 INITIATED — — — 8,215 — — 0.00% $234K 2025-11-12 $38.31

🏢 Other funds also holding NAMS

As of 2026 Q2 — sorted by position size

Medicxi Ventures Management (Jersey) Ltd 3Y 42.19% FCPM III SERVICES B.V. 38.34% Frazier Life Sciences Management, L.P. 3Y 13.35% Bain Capital Life Sciences Investors, LLC 3Y 7Y 7.67% Artia Global Partners LP 3Y 3.15% RA CAPITAL MANAGEMENT, L.P. 3Y 7Y 2.81% Atle Fund Management AB 3Y 7Y 2.27% First Turn Management, LLC 2.11% Duquesne Family Office LLC 3Y 7Y 2.0% DEERFIELD MANAGEMENT COMPANY, L.P. 3Y 7Y 1.51%

FAQ About Mesirow Financial Investment Management, Inc. and NAMS

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 NAMS?

Mesirow Financial Investment Management, Inc. reported NAMS across 4 quarterly 13F filings, from 2025 Q3 through 2026 Q2.

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

The largest reported portfolio weight for NAMS was 0.01% in 2026 Q1.

What is the latest reported NAMS position on this page?

The most recent filing on this page is 2026 Q2, when Mesirow Financial Investment Management, Inc. reported 7,465 shares, equal to 0.00% of portfolio, with an estimated market value of $253K.

What does the chart on this NAMS ownership page compare?

The chart compares Mesirow Financial Investment Management, Inc.'s quarterly NAMS 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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