Citadel Advisors
AMBQ

Citadel Advisors’s Ambiq Micro AMBQ Stock Holding History

Citadel Advisors’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 		$10.8M Buy
+122,425
New +$7.26M ﹤0.01% 3451
2025
Q4 		– Sell
-60,000
Closed -$1.8M – 14667
2025
Q3 		$1.8M Buy
+60,000
New +$2.19M ﹤0.01% 6295

Other funds holding AMBQ

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
AM
Atreides Management Boston, Massachusetts $14.3B AUM 116.01% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Geode Capital Management
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

Citadel Advisors's AMBQ Position: Q2 2026 in Review

Citadel Advisors opened a new position in Ambiq Micro (AMBQ) in Q2 2026: 122,425 shares worth $10.8M. The stake represents ﹤0.01% of the portfolio and ranks #3451 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in AMBQ as recently as Q3 2025.

Citadel Advisors first reported a position in AMBQ in Q3 2025 and has held it in 2 quarters since. 185 funds tracked by Wall St. Rank hold AMBQ as of Q2 2026.

  • Citadel Advisors held 122,425 shares of Ambiq Micro worth $10.8M as of Q2 2026.
  • Ambiq Micro was a new Citadel Advisors position in Q2 2026.
  • Ambiq Micro made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #3451 holding.
  • Citadel Advisors first reported a position in Ambiq Micro in Q3 2025 and has held it in 2 quarters since.
  • 185 funds tracked by Wall St. Rank held Ambiq Micro as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.