Ticker · CUSIP 230031106

CGEM

CULLINAN ONCOLOGY INC

Healthcare·Biotechnology

···Share

Holders (tracked)

Combined shares

2,530,520

Combined value

$26.19M

Last close

$15.06

Quarter

2025Q4

Price is +45.5% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$15.06+7.17 (+90.87%)H $16.30 · L $5.75 · Avg Vol 754K

Position opened

Tracked holders · last 8 quarters

+3 vs previous quarter over the last 8.

SEC event timeline

18 events

Ken Griffin (Citadel Advisors) trimmed2026-02-17
−1,874,090 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−11,254 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+410,854 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−187,976 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+360,162 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+3,950 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−8,380 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+10,128 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+83,563 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+102,298 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) exited2025-12-09
−22,138 shares · 2025Q3
Position
Two Sigma Investments opened position2025-11-14
+59,672 shares · 2025Q3
Position
D.E. Shaw & Co. added2025-11-14
+290 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+39,643 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+6,820 shares · 2025Q3
Position
Wellington Management trimmed2025-11-14
−17,952 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+177,000 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+194,883 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for CGEM →

Follow-the-investor returns

If you'd copied each holder of CGEM…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Ken Griffin (Citadel Advisors)	2021Q2	$6.06	+148.4%	$1.2M
Ken Griffin (Citadel Advisors)	2021Q2	$6.06	+148.4%	$1.2M
Paul Tudor Jones (Tudor Investment)	2025Q2	$7.53	+100.0%	$153K
AQR Capital Management	2022Q2	$7.75	+94.3%	$4.2M
Renaissance Technologies	2021Q2	$9.51	+58.4%	$9.5M
Two Sigma Investments	2021Q4	$9.99	+50.8%	$7.1M
Steve Cohen (Point72)	2023Q2	$10.35	+45.5%	$5.4M
Izzy Englander (Millennium Mgmt)	2021Q1	$14.44	+4.3%	$5.5M
Wellington Management	2021Q1	$16.31	-7.7%	$2.4M
T. Rowe Price	2021Q1	$16.74	-10.0%	$711K
D.E. Shaw & Co.	2021Q1	$18.99	-20.7%	$216K

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions2

Steve Cohen (Point72)
+360,162
$3.7M
Paul Tudor Jones (Tudor Investment)
+10,128
$105K

Added to4

Two Sigma Investments
+410,854
$4.3M
Renaissance Technologies
+102,298
$1.1M
AQR Capital Management
+83,563
$865K
T. Rowe Price
+3,950
$41

Trimmed4

Ken Griffin (Citadel Advisors)
−1,874,090
$19.4M
Izzy Englander (Millennium Mgmt)
−187,976
$1.9M
D.E. Shaw & Co.
−11,254
$116K
Wellington Management
−8,380
$87K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	8	3,691,965	$38.7M	—
2022Q2	11	4,947,681	$63.4M	+3
2022Q3	12	3,858,869	$49.5M	+1
2022Q4	11	3,628,698	$38.3M	-1
2023Q1	10	3,569,741	$36.5M	-1
2023Q2	10	3,744,487	$40.3M	—
2023Q3	10	3,850,560	$34.8M	—
2023Q4	8	4,180,581	$42.6M	-2
2024Q1	7	3,967,964	$67.6M	-1
2024Q2	9	6,327,760	$110.4M	+2
2024Q3	9	3,308,402	$55.4M	—
2024Q4	8	3,871,804	$47.2M	-1
2025Q1	9	4,154,898	$31.5M	+1
2025Q2	9	3,913,833	$29.5M	—
2025Q3	8	3,558,865	$21.1M	-1
2025Q4	11	2,530,520	$26.2M	+3

Who owns CGEM

11 super-investors · 2025Q4

Tracked stake

2.53M

Combined value

$26M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added4Trim5

#	Manager	Shares	Value	% of book	Last action
1	Renaissance Technologies	631.7K	$7M	0.0%	Added+102.3K
2	Two Sigma Investments	470.5K	$5M	0.0%	Added+410.9K
3	Izzy Englander Millennium Mgmt	362.5K	$4M	0.0%	Trim−188.0K
4	Steve Cohen Point72	360.2K	$4M	0.0%	New+360.2K
5	AQR Capital Management	281.5K	$3M	0.0%	Added+83.6K
6	Wellington Management	159.8K	$2M	0.0%	Trim−8.4K
7	Ken Griffin Citadel Advisors	110.3K	$1M	0.0%	Trim−1.87M
8	Ken Griffin Citadel Advisors	82.4K	$853K	0.0%	Trim−1.87M
9	T. Rowe Price	47.2K	$489K	0.0%	Added+4.0K
10	D.E. Shaw & Co.	14.4K	$149K	0.0%	Trim−11.3K
11	Paul Tudor Jones Tudor Investment	10.1K	$105K	0.0%	New+10.1K

Recent moves

20 transactions

ADDAQR Capital Management
+83,563 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+10,128 · 2025Q4
ADDTwo Sigma Investments
+410,854 · 2025Q4
TRIMWellington Management
−8,380 · 2025Q4
NEWSteve Cohen (Point72)
+360,162 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−1,874,090 · 2025Q4
ADDT. Rowe Price
+3,950 · 2025Q4
TRIMD.E. Shaw & Co.
−11,254 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−187,976 · 2025Q4
ADDRenaissance Technologies
+102,298 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−22,138 · 2025Q3
NEWTwo Sigma Investments
+59,672 · 2025Q3
ADDD.E. Shaw & Co.
+290 · 2025Q3
TRIMWellington Management
−17,952 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+39,643 · 2025Q3
ADDAQR Capital Management
+177,000 · 2025Q3
ADDT. Rowe Price
+6,820 · 2025Q3
ADDRenaissance Technologies
+194,883 · 2025Q3
SOLDTwo Sigma Investments
−14,796 · 2025Q2
TRIMD.E. Shaw & Co.
−6,165 · 2025Q2

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