STRO Sutro Biopharma, Inc.

NASDAQ
$15.48

Sutro Biopharma, Inc. (STRO) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+4.00
13 buyers / 12 sellers
MIXED
Funds compared
26
funds with comparable STRO positions
21 current holders · 19 prior-quarter holders
Net share change
-173.9K
+1.50M added, -1.67M cut
Position activity
7 new 6 increased 7 reduced 5 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
RA Capital Management Growth Healthcare Sold Out -715.3K -100.0% $23.7M 0.0% 66
D. E. Shaw & Co., Inc. Quant New +30.1K — $1.0M 0.0% 60
ADAGE CAPITAL PARTNERS GP, L.L.C. Sold Out -200.0K -100.0% $6.6M 0.0% 58
Perceptive Advisors Growth Healthcare Increased +589.5K +82.4% $19.6M 0.7% 57
Qube Research & Technologies Ltd Quant New +106.6K — $3.5M 0.0% 57
Squarepoint Ops LLC Quant New +55.5K — $1.8M 0.0% 56
Hudson Bay Capital Management Event Sold Out -14.8K -100.0% $490.3K 0.0% 53
TWO SIGMA INVESTMENTS, LP Quant Increased +136.5K +209.5% $4.5M 0.0% 53
Walleye Capital Long/Short Quant New +9.3K — $309.0K 0.0% 51
Lighthouse Investment Partners New +8.4K — $277.8K 0.0% 51

Most significant buyers

By move score, not size.

  • D. E. Shaw & Co., Inc. New · +30.1K
  • Perceptive Advisors Increased · +589.5K
  • Qube Research & Technologies Ltd New · +106.6K
  • Squarepoint Ops LLC New · +55.5K
  • TWO SIGMA INVESTMENTS, LP Increased · +136.5K

Most significant sellers

By move score, not size.

  • RA Capital Management Sold Out · -715.3K
  • ADAGE CAPITAL PARTNERS GP, L.L.C. Sold Out · -200.0K
  • Hudson Bay Capital Management Sold Out · -14.8K
  • AQR Capital Management Sold Out · -8.6K
  • Brevan Howard Capital Management Sold Out · -18.8K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
RA Capital Management 1 0 715.3K -715.3K -100.0% 0.0% Sold Out 66
D. E. Shaw & Co., Inc. 1 30.1K 0 +30.1K — 0.0% New 60
ADAGE CAPITAL PARTNERS GP, L.L.C. 2 0 200.0K -200.0K -100.0% 0.0% Sold Out 58
Perceptive Advisors 1 1.3M 715.3K +589.5K +82.4% 0.7% Increased 57
Qube Research & Technologies Ltd 2 106.6K 0 +106.6K — 0.0% New 57
Squarepoint Ops LLC 2 55.5K 0 +55.5K — 0.0% New 56
Hudson Bay Capital Management 3 0 14.8K -14.8K -100.0% 0.0% Sold Out 53
TWO SIGMA INVESTMENTS, LP 2 201.7K 65.2K +136.5K +209.5% 0.0% Increased 53
Walleye Capital 3 9.3K 0 +9.3K — 0.0% New 51
Lighthouse Investment Partners 3 8.4K 0 +8.4K — 0.0% New 51
AQR Capital Management 3 0 8.6K -8.6K -100.0% 0.0% Sold Out 51
Y-Intercept 4 55.9K 0 +55.9K — 0.0% New 50
Brevan Howard Capital Management 3 0 18.8K -18.8K -100.0% 0.0% Sold Out 49
Point72 Asset Management, L.P. 1 237.8K 692.1K -454.3K -65.6% 0.0% Reduced 49
MILLENNIUM MANAGEMENT LLC 2 366.0K 210.4K +155.6K +74.0% 0.0% Increased 47
Quantbot Technologies 4 201 0 +201 — 0.0% New 45
Balyasny Asset Management L.P. 2 711.2K 465.8K +245.4K +52.7% 0.0% Increased 42
Affinity Asset Advisors 2 1.2M 1.1M +103.0K +9.6% 2.0% Increased 38
ADAR1 Capital Management 3 404.0K 524.4K -120.4K -23.0% 0.7% Reduced 34
MARSHALL WACE, LLP 2 175.2K 222.6K -47.4K -21.3% 0.0% Reduced 32
OrbiMed Advisors 2 743.9K 801.1K -57.2K -7.1% 0.5% Reduced 32
RENAISSANCE TECHNOLOGIES LLC 1 86.3K 97.8K -11.5K -11.8% 0.0% Reduced 30
CITADEL ADVISORS LLC 1 102.0K 117.5K -15.6K -13.2% 0.0% Reduced 30
Trexquant Investment 3 27.6K 34.3K -6.7K -19.5% 0.0% Reduced 25
Woodline Partners LP 2 458.0K 457.4K +588 +0.1% 0.0% Increased 23
Biotechnology Value Fund 1 1.3M 1.3M 0 +0.0% 1.1% Unchanged 27

Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.