CGEM in the 13F filings

Cullinan Oncology Inc · CUSIP 230031106

Sector · Pharmaceuticals and biotechnology Theme · Biological products Theme · Healthcare: biopharma and medtech· L3VLUP-defined

Quarter

Q2 2026 Q1 2026 Q3 2024 Q2 2024 Q4 2023 Q3 2023 Q2 2023 Q1 2023 Q4 2022 Q3 2022 Q2 2022 Q1 2022

Quarter end: 31 Mar 2026; the date the book describes
Filed: 18 May 2026; latest of these filings; the earliest 12 May 2026
Managers listing it: 19; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 0 listed it in both
Shares listed: 6,487,571; combined, among listed positions
Reported value: $92m; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 13 buyers (opened or added shares) and 8 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,063,432.

Managers listing CGEM in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

19 of 19 holders

				Action		Filing
T. Rowe Price Associates Inc	2,029,719	$29m	under 0.1%	Added	+1,982,532	15 May 2026 (the filing on sec.gov)
Marshall Wace LLP	1,049,581	$15m	under 0.1%	Added	+635,222	15 May 2026 (the filing on sec.gov)
Point72 Asset Management LP	905,376	$13m	under 0.1%	Added	+545,214	15 May 2026 (the filing on sec.gov)
Two Sigma Investments LP	522,047	$7.4m	under 0.1%	Added	+51,521	15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	360,874	$5.1m	under 0.1%	Added	+79,391	15 May 2026 (the filing on sec.gov)
Millennium Management LLC	346,582	$4.9m	under 0.1%	Trimmed	-15,913	15 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC	324,111	$4.6m	under 0.1%	Trimmed	-307,595	14 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	252,778	$3.6m	under 0.1%	Added	+142,461	15 May 2026 (the filing on sec.gov)
Invesco Ltd	244,150	$3.5m	under 0.1%	Added	+113,827	12 May 2026 (the filing on sec.gov)
Wellington Management Group LLP	149,626	$2.1m	under 0.1%	Trimmed	-10,125	15 May 2026 (the filing on sec.gov)
Moore Capital Management LP	105,960	$1.5m	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	47,377	$673k	under 0.1%	Added	+7,555	15 May 2026 (the filing on sec.gov)
AllianceBernstein LP	47,630	$493k	under 0.1%	Held	0	15 May 2026 (the filing on sec.gov)
Tudor Investment Corp	28,988	$412k	under 0.1%	Added	+18,860	15 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP	24,078	$342k	under 0.1%	Added	+13,108	15 May 2026 (the filing on sec.gov)
Jane Street Group LLC	22,812	$324k	under 0.1%	Trimmed	-164,032	12 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	18,528	$263k	under 0.1%	Held	0	18 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	7,232	$103k	under 0.1%	Added	+2,634	15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP	122	$2k	under 0.1%	New	new	13 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

There is no earlier quarter on file to compare with.

Increases

T. Rowe Price Associates Incexisting position · 2,029,719 shares now+1,982,532
Marshall Wace LLPexisting position · 1,049,581 shares now+635,222
Point72 Asset Management LPexisting position · 905,376 shares now+545,214
Citadel Advisors LLCexisting position · 252,778 shares now+142,461
Invesco Ltdexisting position · 244,150 shares now+113,827

Reductions

Renaissance Technologies LLCexisting position · 324,111 shares now-307,595
Jane Street Group LLCexisting position · 22,812 shares now-164,032
Millennium Management LLCexisting position · 346,582 shares now-15,913
Wellington Management Group LLPexisting position · 149,626 shares now-10,125

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (2)

Moore Capital Management LP$1.5m
Quantbot Technologies LP$2k

Exited (4)

Squarepoint Ops LLCwas $785k
ExodusPoint Capital Management LPwas $316k
Schonfeld Strategic Advisors LLCwas $172k
D. E. Shaw & Co.was $149k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

1 in Q1 2023 to 1 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

CGEM by quarter
Quarter	Holders	Reported value	Buyers	Sellers
Q1 2021	3	$100m	n.a.	n.a.
Q2 2021	2	$61m	n.a.	n.a.
Q3 2021	2	$51m	n.a.	n.a.
Q4 2021	2	$30m	n.a.	n.a.
Q1 2022	2	$21m	n.a.	n.a.
Q2 2022	2	$30m	n.a.	n.a.
Q3 2022	1	$5.5m	n.a.	n.a.
Q4 2022	1	$2.1m	n.a.	n.a.
Q1 2023	1	$108k	n.a.	n.a.
Q2 2023	1	$2.4m	n.a.	n.a.
Q3 2023	1	$2.0m	n.a.	n.a.
Q4 2023	1	$2.3m	0	0
Q2 2024	2	$44m	2	0
Q3 2024	1	$26m	1	0
Q1 2026	1	$1.5m	13	8
Q2 2026	1	$3.5m	13	9

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

CGEM and GILD →CGEM and AMGN →CGEM and ARGX →Choose a stock to compare with CGEM →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own CGEM, latest filings →Back to the 13F Explorer →

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