XTX Topco Ltd

Position in MCRB — Seres Therapeutics, Inc.

CIK 1828301 LONDON, X0

Position in MCRB

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$163,575

-$85,477 QoQ

Shares Held

20,732

-7.5% QoQ

Ownership

0.209%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#13

of 36 holders

Holding Since

Sep 2021

11 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

XTX Topco Ltd holds $413,155,276 across 381 Biotechnology names. MCRB ranks #248 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	REGN	Regeneron Pharmaceuticals, Inc.	30,522	$19,031,687
2	ASND	Ascendis Pharma A/S	43,289	$11,546,042
3	BBIO	BridgeBio Pharma, Inc.	116,611	$8,685,187
4	MRNA	Moderna, Inc.	123,281	$8,633,368
5	JAZZ	Jazz Pharmaceuticals plc	30,496	$7,348,621
6	KYMR	Kymera Therapeutics, Inc.	61,501	$7,052,319
7	CYTK	Cytokinetics Inc	80,743	$6,878,496
8	PTCT	Ptc Therapeutics, Inc.	81,923	$6,682,459

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$163,575	20,732	-7.5%	Shares	Defined	2026-08-14
2025-06-30	$249,052	22,417	+37.5%	Shares	Defined	2025-08-12
2024-12-31	$13,545	16,300	-26.4%	Shares	Defined	2025-02-13
2024-06-30	$16,023	22,132	-70.8%	Shares	Defined	2024-08-12
2024-03-31	$58,585	75,692	-81.2%	Shares	Defined	2024-05-13
2023-12-31	$563,508	402,506	+168.2%	Shares	Defined	2024-02-13
2023-09-30	$357,230	150,097	+284.5%	Shares	Defined	2023-11-13
2022-12-31	$218,624	39,040	+244.4%	Shares	Defined	2023-02-14
2022-09-30	$72,777	11,336	-2.2%	Shares	Defined	2022-11-14
2021-12-31	$96,528	11,588	-52.8%	Shares	Defined	2022-02-11
2021-09-30	$170,958	24,563	—	Shares	Defined	2021-11-12
No filing history on record for this holder in this stock.