American Century Companies’s Q32 Bio QTTB Stock Holding History

American Century Companies’s Portfolio QTTB Stock Details QTTB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$3.47M	Buy	272,752 +253,982	+1,353%	+$2.12M	﹤0.01%	2015
2026 Q1	$121K	Buy	+18,770	New	+$89.2K	﹤0.01%	2765

Other funds holding QTTB

OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return

BCM

Boxer Capital Management San Diego, California $1.33B AUM 864.5% 1-Year Est. Return

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return

BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return

RCM

RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return

Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return

Opaleye Management Boston, Massachusetts $1.1B AUM 197.64% 1-Year Est. Return

LGM

Logos Global Management San Francisco, California $2.32B AUM 536.01% 1-Year Est. Return

SummitTX Capital Fort Worth, Texas $3.89B AUM 55.94% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

American Century Companies's QTTB Position: Q2 2026 in Review

American Century Companies increased its Q32 Bio (QTTB) stake by 1,353% in Q2 2026, buying an estimated $2.12M and bringing the position to 272,752 shares worth $3.47M. The position accounts for ﹤0.01% of the portfolio, ranked #2015.

American Century Companies first reported a position in QTTB in Q1 2026 and has held it in 2 quarters since. 72 funds tracked by Wall St. Rank hold QTTB as of Q2 2026.

American Century Companies held 272,752 shares of Q32 Bio worth $3.47M as of Q2 2026.
American Century Companies bought 253,982 Q32 Bio shares in Q2 2026, an estimated $2.12M.
Q32 Bio made up ﹤0.01% of American Century Companies's portfolio in Q2 2026, its #2015 holding.
American Century Companies first reported a position in Q32 Bio in Q1 2026 and has held it in 2 quarters since.
72 funds tracked by Wall St. Rank held Q32 Bio as of Q2 2026.

Based on American Century Companies's 13F filing for Q2 2026, filed 12 Aug 2026.