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Security record · archived quarter

CBIO

name pending profile ingest

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025
15Tracked holders
+8Δ holders
3.03MShares held
$36.06MReported value
+8New positions
−0Exits
Strongly Rising How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +30.0% · share flow +30.0% · net new positions +20.0% · formula
Broad accumulation: rising shares across more holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 40 +13 11.30M $203.37M +17 −4
Q1 2026 27 -2 9.11M $167.30M +2 −4
Q4 2025 29 0 6.56M $77.69M +2 −2
Q3 2025 15 +8 3.03M $36.06M +8 n/a
Q2 2025 4 +2 1.70M $27.45M +2 n/a
Holder count
Who holds it · Q3 2025
#ManagerSharesΔ sharesValueTheir weightHeld
1 Fidelity (FMR) ✦ 1.41M 0.0% $16.82M 0.0% ▲ Add 2 SEC ↗ ×2
2 The Vanguard Group ✦ (passive) 657.90K New $7.82M 0.0% New 1 SEC ↗ ×3
3 T. Rowe Price ✦ 383.60K New $4.56M 0.0% New 1 SEC ↗
4 Adage Capital Partners ✦ 200.00K +98.2% $2.38M 0.0% ▲ Add 2 SEC ↗
5 BlackRock ✦ (passive) 109.11K +1703.3% $1.30M 0.0% ▲ Add 2 SEC ↗ ×2
6 Geode Capital Management ✦ (passive) 69.13K New $822,016 0.0% New 1 SEC ↗ ×2
7 Marshall Wace ✦ 43.69K New $519,522 0.0% New 1 SEC ↗ ×2
8 Goldman Sachs Group ✦ 36.98K n/a $439,633 0.0% n/c 1 SEC ↗
9 Two Sigma Investments ✦ 28.32K New $336,701 0.0% New 1 SEC ↗
10 Renaissance Technologies ✦ 26.90K New $319,841 0.0% New 1 SEC ↗
11 Citadel Advisors ✦ 25.59K New $304,301 0.0% New 1 SEC ↗
12 State Street Global Advisors ✦ (passive) 18.62K New $221,356 0.0% New 1 SEC ↗
13 Wellington Management ✦ 17.70K -90.2% $210,429 0.0% ▼ Trim 2 SEC ↗
14 Morgan Stanley ✦ 145 n/a $1,724 0.0% n/c 1 SEC ↗ ×3
15 JPMorgan Chase ✦ 34 n/a $404 0.0% n/c 1 SEC ↗ ×2

“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.

New buyers

The Vanguard Group $7.82M 0.0%
T. Rowe Price $4.56M 0.0%
Geode Capital Management $822,016 0.0%
Marshall Wace $519,522 0.0%
Two Sigma Investments $336,701 0.0%
Renaissance Technologies $319,841 0.0%
Citadel Advisors $304,301 0.0%
State Street Global Advisors $221,356 0.0%

Exited

No tracked exits this quarter.

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 59 holders, 25.07M shares, $454.76M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Sep 18 Brumm Joshua T

Officer, Director · 7.84K sh · $130,956

Sep 18 McNeill Jonathan

Officer · 3.84K sh · $64,150

Sep 16 McNeill Jonathan

Officer · 731 sh · $13,085

Sep 16 Scalzo Richard William

Officer · 568 sh · $10,167

Sep 16 Im Ellie Eunkyung

Officer · 623 sh · $11,152

Sep 16 Pinkas Jan

Officer · 658 sh · $11,778

Sep 16 Bispham Barbara Harlin

Officer · 620 sh · $11,098

Sep 16 Lynch Ryan

Officer · 240 sh · $4,296

Sep 16 Brumm Joshua T

Officer, Director · 1.61K sh · $28,819

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Aug 14 SC 13G/A: BALYASNY ASSET MANAGEMENT L.P.

View original SEC filing ↗

Jul 20 SC 13D/A: Fairmount Funds Management LLC

16.5% of class · View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q3 2025 · Methodology · Get this via the API