CGEM

Cullinan Therapeutics Inc
Health CareUSCUSIP 230031106◍ Confluence graph
Tracked 13F Holders
168
-95 QoQ
13F Value (tracked)
$1.0B
Insider Net · 180d
-$867K
0↑ 1↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)29 adding · 18 trimming
Insider net (180d)-$867K

Who owns CGEM?

168 tracked 13F filers

168 tracked 13F filers disclose a position in CGEM as of the latest SEC 13F filings, a combined $1.0B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
1 source-reported value row is withheld because the reported units do not agree with same-security peers. Share counts remain visible and unchanged.
#FundPosition valueSharesLast moveAs ofHistory
1Lynx1 Capital Management LP
$163.2M
9.0M
Held
Q2 2026
2MPM BioImpact LLC
$108.7M
7.6M
Held
Q1 2026
3BVF INC/IL
$81.7M
5.8M
Held
Q1 2026
4BlackRock, Inc.
$63.2M
4.4M
+1.1%
Added · +50K sh
Q1 2026
5STATE STREET CORP
$66.8M
3.7M
+44%
Added · +1.1M sh
Q2 2026
6Kynam Capital Management, LP
$44.3M
3.1M
Held
Q1 2026
7VANGUARD CAPITAL MANAGEMENT LLC
$35.3M
2.5M
First observed position
No prior filed position
Q1 2026
8RTW INVESTMENTS, LP
$43.1M
2.4M
+39%
Added · +658K sh
Q2 2026
9PRICE T ROWE ASSOCIATES INC /MD/
$28.8M
2.0M
43×
Added · +2.0M sh
Q1 2026
10Siren, L.L.C.
$34.5M
1.9M
+59%
Added · +700K sh
Q2 2026
11GEODE CAPITAL MANAGEMENT, LLC
$28.2M
1.5M
+13%
Added · +179K sh
Q2 2026
12Blue Owl Capital Holdings LP
$28.0M
1.5M
−19%
Reduced · −370K sh
Q2 2026
13Venrock Adviser, LLC
$19.6M
1.4M
Held
Q1 2026
14Nextech Invest Ltd.
$16.2M
1.1M
Held
Q1 2026
15BOOTHBAY FUND MANAGEMENT, LLC
$15.8M
1.1M
−10%
Reduced · −124K sh
Q1 2026
16MARSHALL WACE, LLP
$14.9M
1.0M
+153%
Added · +635K sh
Q1 2026
17DIMENSIONAL FUND ADVISORS LP
$12.9M
906K
+6.7%
Added · +57K sh
Q1 2026
18Nuveen, LLC
$11.4M
806K
+39%
Added · +227K sh
Q1 2026
19Affinity Asset Advisors, LLC
$11.1M
781K
−60%
Reduced · −1.2M sh
Q1 2026
20TWIN FOCUS CAPITAL PARTNERS, LLC
$10.8M
595K
Held
Q2 2026
21MORGAN STANLEY
$8.4M
589K
−23%
Reduced · −177K sh
Q1 2026
22VANGUARD PORTFOLIO MANAGEMENT LLC
$7.9M
553K
First observed position
No prior filed position
Q1 2026
23TWO SIGMA INVESTMENTS, LP
$7.4M
522K
+11%
Added · +52K sh
Q1 2026
24BANK OF AMERICA CORP /DE/
$7.3M
517K
+49%
Added · +170K sh
Q1 2026
25GOLDMAN SACHS GROUP INC
$6.5M
455K
−37%
Reduced · −266K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is CGEM being bought or sold by institutions?

Last quarter, 7 funds opened a new position in CGEM and 22 added to an existing one, while 18 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
7
funds
Added
22
funds
Reduced
18
funds
Exited
0
funds

Funds that own CGEM also own

CompanyCo-held byCombined value
NVIDIA CORPNVDA73 funds$227.5B
AMAZON.COM INCAMZN72 funds$104.6B
ELI LILLY & COLLY72 funds$44.8B
BOSTON SCIENTIFIC CORPBSX72 funds$7.7B
MICROSOFT CORPMSFT70 funds$148.9B
BROADCOM INCAVGO70 funds$89.4B
VERTEX PHARMACEUTICALS INCVRTX70 funds$7.7B
CAPITAL ONE FINANCIAL CORPCOF70 funds$6.7B
CENTENE CORPCNC70 funds$3.0B
ALPHABET INC-CL AGOOGL69 funds$83.1B
META PLATFORMS INC-CLASS AMETA69 funds$64.8B
MICRON TECHNOLOGY INCMU69 funds$20.9B

Ranked by how many of CGEM's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$867K
1 insiders
Net
-$867K
4 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Aug 13, 2026Michaelson JenniferChief Scientific OfficerSell (S)30K$608K
Jul 6, 2026Michaelson JenniferChief Scientific OfficerSell (S)8K$143K
May 5, 2026Michaelson JenniferChief Scientific OfficerSell (S)8K$114K
May 5, 2026Michaelson JenniferChief Scientific OfficerSell (S)200$3K
Mar 5, 2026Michaelson JenniferChief Scientific OfficerSell (S)8K$125K
Feb 25, 2026Michaelson JenniferChief Scientific OfficerSell (S)2K$25K
Feb 24, 2026SUMER JACQUELYN LChief Legal OfficerSell (S)4K$52K
Feb 24, 2026Jones Jeffrey AlanChief Medical OfficerSell (S)5K$66K
Feb 24, 2026AHMED NADIMPresident and CEO, DirectorSell (S)14K$196K
Feb 24, 2026Michaelson JenniferChief Scientific OfficerSell (S)4K$52K
Feb 23, 2026Michaelson JenniferChief Scientific OfficerSell (S)2K$25K
Feb 20, 2026AHMED NADIMPresident and CEO, DirectorSell (S)16K$223K

Institutional ownership over time

61 funds-42 since Q3 2024
078156Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $412.6M · 1 values withheld

Recent filings

15 shown

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Connected entities for CGEM

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Ask your agent what changed in CGEM

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/CGEM/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for CGEM.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for CGEM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.