AMERICAN CENTURY COMPANIES INC

Position in CRBU — Caribou Biosciences, Inc.

CIK 748054 KANSAS CITY, MO

Position in CRBU

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$213,660

+$34,860 QoQ

Shares Held

112,453

0.0% QoQ

Ownership

0.113%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#41

of 137 holders

Holding Since

Dec 2022

11 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

AMERICAN CENTURY COMPANIES INC holds $3,844,311,104 across 169 Biotechnology names. CRBU ranks #139 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	1,802,363	$596,347,845
2	REGN	Regeneron Pharmaceuticals, Inc.	562,097	$434,298,626
3	VRTX	Vertex Pharmaceuticals Inc / Ma	813,285	$363,164,283
4	ASND	Ascendis Pharma A/S	1,397,119	$319,563,028
5	INSM	INSMED Inc	925,799	$151,386,652
6	ARGX	Argenx SE	173,700	$126,844,425
7	IONS	Ionis Pharmaceuticals Inc	1,663,803	$124,934,967
8	CPRX	Catalyst Pharmaceuticals, Inc.	4,138,416	$102,467,180

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$213,660	112,453	0.0%	Shares	Defined	2026-05-15
2025-12-31	$178,800	112,453	+37.5%	Shares	Defined	2026-02-13
2025-09-30	$190,598	81,802	-48.8%	Shares	Defined	2025-11-12
2024-12-31	$254,116	159,822	+9.2%	Shares	Defined	2025-02-11
2024-09-30	$286,945	146,401	+17.1%	Shares	Defined	2024-11-12
2024-06-30	$205,047	125,029	+15.2%	Shares	Defined	2024-08-07
2024-03-31	$557,684	108,499	+44.4%	Shares	Defined	2024-05-14
2023-12-31	$430,506	75,132	+173.9%	Shares	Defined	2024-02-13
2023-06-30	$116,569	27,428	+74.9%	Shares	Defined	2023-08-14
2023-03-31	$83,292	15,686	+16.8%	Shares	Defined	2023-05-11
2022-12-31	$84,340	13,430	—	Shares	Defined	2023-02-13
No filing history on record for this holder in this stock.