Foresite Capital Management V, LLC IRON — Disc Medicine, Inc.

Ownership history in Foresite Capital Management V, LLC  ·  13 quarters on record

AI Ownership Summary

Foresite Capital Management V, LLC reported Disc Medicine, Inc. (IRON) in 13 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 19.62% in 2025 Q2. The latest visible filing shows IRON at 14.45% 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 IRON ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Foresite Capital Management V, LLC's position in Disc Medicine, 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
2025 Q4

IRON was reported at 14.45% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
19.62% 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
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.

IRON stock page Foresite Capital Management V, LLC fund profile Foresite Capital Management V, LLC full holdings
How Foresite Capital Management V, LLC held IRON — position size vs. price
% of Fund (quarterly)    IRON 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 — — — 299,069 — 0% 14.45% $23.7M 2026-02-14 (Est.) $55.95
2025 Q3 UNCHANGED — — — 299,069 — 0% 18.17% $19.8M 2025-11-14 $89.95
2025 Q2 UNCHANGED — — — 299,069 — 0% 19.62% $15.8M 2025-08-12 $59.03
2025 Q1 UNCHANGED — — — 299,069 — 0% 16.94% $14.8M 2025-05-15 $47.09
2024 Q4 UNCHANGED — — — 299,069 — 0% 15.78% $19.0M 2025-02-14 $54.10
2024 Q3 UNCHANGED — — — 299,069 — 0% 10.21% $14.7M 2024-11-14 $60.67
2024 Q2 ADDED — — — 299,069 +55,556 +22.8% 8.61% $13.5M 2024-08-13 $45.87
2024 Q1 UNCHANGED — — — 243,513 — 0% 14.23% $15.2M 2024-05-15 $31.86
2023 Q4 UNCHANGED — — — 243,513 — 0% 19.16% $14.1M 2024-02-13 $66.44
4 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding IRON

As of 2026 Q1 — sorted by position size

PSP Research LLC 0.36% Bayforest Capital Ltd 0.26% Eleva Capital SAS 0.1% iA Global Asset Management Inc. 0.06% PROFUND ADVISORS LLC 3Y 7Y 0.06% Assenagon Asset Management S.A. 3Y 7Y 0.05% China Universal Asset Management Co., Ltd. 3Y 0.04% Aberdeen Group plc 3Y 7Y 0.04% Pictet Asset Management Holding SA 0.03% E Fund Management Co., Ltd. 3Y 0.01%

FAQ About Foresite Capital Management V, LLC and IRON

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

How long has Foresite Capital Management V, LLC reported owning IRON?

Foresite Capital Management V, LLC reported IRON across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported IRON position in Foresite Capital Management V, LLC's portfolio?

The largest reported portfolio weight for IRON was 19.62% in 2025 Q2.

What is the latest reported IRON position on this page?

The most recent filing on this page is 2025 Q4, when Foresite Capital Management V, LLC reported 299,069 shares, equal to 14.45% of portfolio, with an estimated market value of $23.7M.

What does the chart on this IRON ownership page compare?

The chart compares Foresite Capital Management V, LLC's quarterly IRON 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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