XTX Topco’s Ambiq Micro AMBQ Stock Holding History

XTX Topco’s Portfolio AMBQ Stock Details AMBQ Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.48M	Sell	16,723 -8,131	-33%	-$482K	0.02%	1422
2026 Q1	$632K	Buy	+24,854	New	+$741K	0.01%	1813
2025 Q4	–	Sell	-26,662	Closed	-$798K	–	3980
2025 Q3	$798K	Buy	+26,662	New	+$972K	0.04%	722

Other funds holding AMBQ

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Atreides Management Boston, Massachusetts $14.3B AUM 116.01% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

NIM

Needham Investment Management New York $3.33B AUM 163.16% 1-Year Est. Return

XTX Topco's AMBQ Position: Q2 2026 in Review

XTX Topco reduced its Ambiq Micro (AMBQ) stake by 33% in Q2 2026, selling an estimated $482K and leaving 16,723 shares worth $1.48M. The position accounts for 0.02% of the portfolio, ranked #1422.

XTX Topco first reported a position in AMBQ in Q3 2025 and has held it in 3 quarters since. 185 funds tracked by Wall St. Rank hold AMBQ as of Q2 2026.

XTX Topco held 16,723 shares of Ambiq Micro worth $1.48M as of Q2 2026.
XTX Topco sold 8,131 Ambiq Micro shares in Q2 2026, an estimated $482K.
Ambiq Micro made up 0.02% of XTX Topco's portfolio in Q2 2026, its #1422 holding.
XTX Topco first reported a position in Ambiq Micro in Q3 2025 and has held it in 3 quarters since.
185 funds tracked by Wall St. Rank held Ambiq Micro as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.