ZBIO Zenas BioPharma, Inc.

NASDAQ
$31.91

Zenas BioPharma, Inc. (ZBIO) 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
+45.45
16 buyers / 6 sellers
STRONG BUYING
Funds compared
24
funds with comparable ZBIO positions
21 current holders · 18 prior-quarter holders
Net share change
+1.12M
+1.52M added, -402.5K cut
Position activity
6 new 10 increased 3 reduced 3 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
Point72 Asset Management, L.P. New +16.1K — $409.5K 0.0% 59
Verition Fund Management Event Long/Short New +73.0K — $1.9M 0.0% 56
Voloridge Investment Management Quant Sold Out -77.5K -100.0% $2.0M 0.0% 55
TWO SIGMA INVESTMENTS, LP Quant Increased +540.1K +196.4% $13.7M 0.0% 55
CITADEL ADVISORS LLC Quant Increased +128.9K +192.8% $3.3M 0.0% 54
Vestal Point Capital Growth Healthcare Increased +165.0K +82.5% $4.2M 0.2% 51
Schonfeld Strategic Advisors Long/Short Quant Sold Out -17.6K -100.0% $447.7K 0.0% 51
Squarepoint Ops LLC Quant Increased +82.3K +192.0% $2.1M 0.0% 51
Brevan Howard Capital Management Macro New +14.7K — $372.4K 0.0% 49
Boothbay Fund Management New +33.3K — $844.6K 0.0% 49

Most significant buyers

By move score, not size.

  • Point72 Asset Management, L.P. New · +16.1K
  • Verition Fund Management New · +73.0K
  • TWO SIGMA INVESTMENTS, LP Increased · +540.1K
  • CITADEL ADVISORS LLC Increased · +128.9K
  • Vestal Point Capital Increased · +165.0K

Most significant sellers

By move score, not size.

  • Voloridge Investment Management Sold Out · -77.5K
  • Schonfeld Strategic Advisors Sold Out · -17.6K
  • Aquatic Capital Management Sold Out · -18.6K
  • MARSHALL WACE, LLP Reduced · -178.5K
  • Balyasny Asset Management L.P. Reduced · -90.4K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Point72 Asset Management, L.P. 1 16.1K 0 +16.1K — 0.0% New 59
Verition Fund Management 2 73.0K 0 +73.0K — 0.0% New 56
Voloridge Investment Management 2 0 77.5K -77.5K -100.0% 0.0% Sold Out 55
TWO SIGMA INVESTMENTS, LP 2 815.2K 275.1K +540.1K +196.4% 0.0% Increased 55
CITADEL ADVISORS LLC 1 195.8K 66.9K +128.9K +192.8% 0.0% Increased 54
Vestal Point Capital 1 365.0K 200.0K +165.0K +82.5% 0.2% Increased 51
Schonfeld Strategic Advisors 3 0 17.6K -17.6K -100.0% 0.0% Sold Out 51
Squarepoint Ops LLC 2 125.2K 42.9K +82.3K +192.0% 0.0% Increased 51
Brevan Howard Capital Management 3 14.7K 0 +14.7K — 0.0% New 49
Boothbay Fund Management 4 33.3K 0 +33.3K — 0.0% New 49
Y-Intercept 4 17.3K 0 +17.3K — 0.0% New 48
Aquatic Capital Management 4 0 18.6K -18.6K -100.0% 0.0% Sold Out 48
Engineers Gate 4 13.0K 0 +13.0K — 0.0% New 48
Voleon Capital Management 3 167.1K 29.6K +137.5K +464.5% 0.1% Increased 47
J. Goldman & Co. 3 68.2K 36.8K +31.4K +85.4% 0.1% Increased 41
Quantbot Technologies 4 1.9K 256 +1.7K +653.1% 0.0% Increased 39
Walleye Capital 3 209.1K 125.2K +83.8K +66.9% 0.0% Increased 39
MILLENNIUM MANAGEMENT LLC 2 660.5K 476.8K +183.7K +38.5% 0.0% Increased 38
MARSHALL WACE, LLP 2 323.4K 501.9K -178.5K -35.6% 0.0% Reduced 36
Balyasny Asset Management L.P. 2 576.7K 667.1K -90.4K -13.5% 0.0% Reduced 32
AQR Capital Management 3 31.1K 51.0K -19.9K -39.0% 0.0% Reduced 29
Woodline Partners LP 2 590.5K 590.5K +14 +0.0% 0.0% Increased 23
EcoR1 Capital 2 789.5K 789.5K 0 +0.0% 1.0% Unchanged 24
Rock Springs Capital Management 3 502.1K 502.1K 0 +0.0% 0.6% Unchanged 20

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.