DRIEHAUS CAPITAL MANAGEMENT LLC KRRO — KORRO BIO INC

Ownership history in DRIEHAUS CAPITAL MANAGEMENT LLC  ·  7 quarters on record

AI Ownership Summary

DRIEHAUS CAPITAL MANAGEMENT LLC reported KORRO BIO INC (KRRO) in 7 quarterly 13F filings from 2024 Q2 through 2026 Q1. Peak portfolio weight reached 0.23% in 2025 Q3. The latest visible filing shows KRRO at 0.04% 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 KRRO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was DRIEHAUS CAPITAL MANAGEMENT LLC's position in KORRO BIO 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

KRRO was reported at 0.04% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.23% in 2025 Q3

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

Time in book
Holding Window
2024 Q2 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.

KRRO stock page DRIEHAUS CAPITAL MANAGEMENT LLC fund profile DRIEHAUS CAPITAL MANAGEMENT LLC full holdings
How DRIEHAUS CAPITAL MANAGEMENT LLC held KRRO — position size vs. price
% of Fund (quarterly)    KRRO price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 7 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 450,045 -221,936 -33.0% 0.04% $5.1M 2026-05-15 $10.18
2025 Q3 ADDED — — — 671,981 +91,122 +15.7% 0.23% $32.2M 2025-11-14 $6.07
2025 Q2 REDUCED — — — 580,859 -1,590 -0.3% 0.06% $7.3M 2025-08-14 $19.88
2025 Q1 ADDED — — — 582,449 +87,544 +17.7% 0.10% $10.1M 2025-05-15 $14.48
2024 Q4 ADDED — — — 494,905 +340,410 +220.3% 0.16% $18.8M 2025-02-14 $30.02
2024 Q3 ADDED — — — 154,495 +37,637 +32.2% 0.04% $5.2M 2024-11-14 $49.70
2024 Q2 INITIATED — — — 116,858 — — 0.04% $4.0M 2024-08-14 $39.71

🏢 Other funds also holding KRRO

As of 2026 Q1 — sorted by position size

72 Investment Holdings, LLC 3Y 6.32% Lynx1 Capital Management LP 3Y 2.75% Atlas Venture Life Science Advisors, LLC 3Y 1.63% NEA Management Company, LLC 3Y 7Y 0.84% Venrock Adviser, LLC 3Y 0.43% Affinity Asset Advisors, LLC 3Y 0.41% ADAR1 Capital Management, LLC 0.36% AIHC Capital Management Ltd 0.29% Nantahala Capital Management, LLC 3Y 7Y 0.28% TCG Crossover Management, LLC 3Y 0.13%

FAQ About DRIEHAUS CAPITAL MANAGEMENT LLC and KRRO

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

How long has DRIEHAUS CAPITAL MANAGEMENT LLC reported owning KRRO?

DRIEHAUS CAPITAL MANAGEMENT LLC reported KRRO across 7 quarterly 13F filings, from 2024 Q2 through 2026 Q1.

What was the largest reported KRRO position in DRIEHAUS CAPITAL MANAGEMENT LLC's portfolio?

The largest reported portfolio weight for KRRO was 0.23% in 2025 Q3.

What is the latest reported KRRO position on this page?

The most recent filing on this page is 2026 Q1, when DRIEHAUS CAPITAL MANAGEMENT LLC reported 450,045 shares, equal to 0.04% of portfolio, with an estimated market value of $5.1M.

What does the chart on this KRRO ownership page compare?

The chart compares DRIEHAUS CAPITAL MANAGEMENT LLC's quarterly KRRO 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 DRIEHAUS CAPITAL MANAGEMENT LLC time their KRRO position?

Based on 13F filing dates vs. subsequent KRRO price moves, DRIEHAUS CAPITAL MANAGEMENT LLC correctly timed 4 out of 6 reported position changes (67%). The annualised alpha on KRRO relative to SPY over the holding period was -61.9%.

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