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: 30 Jun 2026; the date the book describes
Filed: 2 Sep 2026; latest of these filings; the earliest 3 Aug 2026
Managers listing it: 21; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q1 2026 and Q2 2026; 1 listed it in both
Shares listed: 7,023,728; combined, among listed positions
Reported value: $128m; 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 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +536,157.

Managers listing CGEM in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, 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

21 of 21 holders

				Action		Filing
T. Rowe Price Associates Inc	3,825,950	$70m	under 0.1%	Added	+1,796,231	14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC	581,338	$11m	under 0.1%	Added	+220,464	14 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC	397,484	$7.2m	under 0.1%	Added	+144,706	2 Sep 2026 (the filing on sec.gov)
Millennium Management LLC	346,232	$6.3m	under 0.1%	Trimmed	-350	14 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC	326,811	$6.0m	under 0.1%	Added	+2,700	13 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP	272,581	$5.0m	under 0.1%	Trimmed	-249,466	14 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	240,115	$4.4m	under 0.1%	Added	+232,883	13 Aug 2026 (the filing on sec.gov)
Moore Capital Management LP	189,946	$3.5m	0.05%	Added	+83,986	14 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC	168,117	$3.1m	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP	164,716	$3.0m	under 0.1%	Added	+15,090	14 Aug 2026 (the filing on sec.gov)
Invesco Ltd	143,552	$2.6m	under 0.1%	Trimmed	-100,598	14 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP	75,009	$1.4m	under 0.1%	Trimmed	-830,367	14 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP	66,051	$1.2m	under 0.1%	Trimmed	-983,530	13 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP	75,250	$1.1m	under 0.1%	Added	+27,620	14 Aug 2026 (the filing on sec.gov)
MFS Investment Management	31,713	$577k	under 0.1%	New	new	3 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP	28,537	$520k	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP	26,090	$475k	under 0.1%	Trimmed	-21,287	14 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp	22,518	$410k	under 0.1%	Trimmed	-6,470	14 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC	20,279	$366k	under 0.1%	New	new	13 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	18,528	$337k	under 0.1%	Held	0	14 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP	2,911	$53k	under 0.1%	Added	+2,789	12 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

T. Rowe Price Associates Incexisting position · 3,825,950 shares now+1,796,231
Fidelity (FMR LLC)existing position · 240,115 shares now+232,883
AQR Capital Management LLCexisting position · 581,338 shares now+220,464
Squarepoint Ops LLCnew position · 168,117 shares now+168,117
Citadel Advisors LLCexisting position · 397,484 shares now+144,706

Reductions

Marshall Wace LLPexisting position · 66,051 shares now-983,530
Point72 Asset Management LPexisting position · 75,009 shares now-830,367
Two Sigma Investments LPexisting position · 272,581 shares now-249,466
Invesco Ltdexisting position · 143,552 shares now-100,598
Susquehanna International Group LLPexisting position · 26,090 shares now-21,287

New positions and exits

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

New (4)

Exited (2)

Brevan Howard Capital Management LPwas $342k
Jane Street Group LLCwas $324k

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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