AMBIQ MICRO INC (AMBQ) Institutional Shareholders
AMBIQ MICRO INC (AMBQ) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.46B in AMBQ holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of AMBQ tracked by InsiderSet, reporting ownership valued at approximately $121.91M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $90.38M, representing an estimated loss of -25.87% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 46% of the total disclosed AMBQ value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., T. Rowe Price Investment Management, Inc., D. E. Shaw & Co., Inc., and several other long-term asset managers with concentrated positions in AMBIQ MICRO INC (AMBQ).
This page ranks the largest institutional AMBQ shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
179
Total Reported Value
$1.46B
Largest Holder
Blackrock, Inc.
Largest Position
$121.91M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
163
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 1,380,623 | $121,909,012 | $90,375,582 | -$31,533,430 | -25.87% | |
| T. Rowe Price Investment Management, Inc. | 0.06% | 1,006,359 | $88,862,000 | $65,876,260 | -$22,985,740 | -25.87% | |
| D. E. Shaw & Co., Inc. | 0.05% | 983,916 | $86,879,783 | $64,407,141 | -$22,472,642 | -25.87% | |
| Atreides Management, Lp | 0.69% | 877,123 | $77,449,961 | $57,416,472 | -$20,033,489 | -25.87% | |
| State Street Corp | 0.00% | 861,979 | $76,112,746 | $56,425,145 | -$19,687,601 | -25.87% | |
| Vanguard Capital Management Llc | 0.00% | 768,539 | $67,861,994 | $50,308,563 | -$17,553,431 | -25.87% | |
| Two Sigma Investments, Lp | 0.04% | 651,786 | $57,552,704 | $42,665,912 | -$14,886,792 | -25.87% | |
| Goldman Sachs Group Inc | 0.00% | 446,950 | $39,465,686 | $29,257,347 | -$10,208,339 | -25.87% | |
| Geode Capital Management, Llc | 0.00% | 339,327 | $29,967,042 | $22,212,345 | -$7,754,697 | -25.88% | |
| Needham Investment Management Llc | 0.86% | 323,700 | $28,582,710 | $21,189,402 | -$7,393,308 | -25.87% | |
| Schonfeld Strategic Advisors Llc | 0.15% | 315,455 | $27,854,676 | $20,649,684 | -$7,204,992 | -25.87% | |
| Silvercrest Asset Management Group Llc | 0.18% | 309,096 | $27,293,177 | $20,233,424 | -$7,059,753 | -25.87% | |
| Jane Street Group, Llc | 0.02% | 294,802 | $26,031,016 | $19,297,739 | -$6,733,277 | -25.87% | |
| Millennium Management Llc | 0.02% | 289,206 | $25,536,890 | $18,931,425 | -$6,605,465 | -25.87% | |
| Driehaus Capital Management Llc | 0.15% | 288,979 | $25,516,846 | $18,916,565 | -$6,600,281 | -25.87% | |
| Neuberger Berman Group Llc | 0.02% | 272,126 | $24,028,726 | $17,813,368 | -$6,215,358 | -25.87% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.04% | 244,394 | $21,579,990 | $15,998,031 | -$5,581,959 | -25.87% |
| Emerald Advisers, Llc | 0.51% | 243,664 | $21,515,531 | $15,950,245 | -$5,565,286 | -25.87% | |
| Hrt Financial Lp | 0.04% | 225,639 | $19,923,000 | $14,770,329 | -$5,152,671 | -25.86% | |
| Voloridge Investment Management, Llc | 0.08% | 223,276 | $19,715,271 | $14,615,647 | -$5,099,624 | -25.87% | |
| Cooper Creek Partners Management Llc | 0.81% | 220,000 | $19,426,000 | $14,401,200 | -$5,024,800 | -25.87% | |
| Renaissance Technologies LLC | Jim Simons | 0.03% | 214,756 | $18,962,955 | $14,057,928 | -$4,905,027 | -25.87% |
| Walleye Capital Llc | 0.09% | 214,528 | $18,942,822 | $14,043,003 | -$4,899,819 | -25.87% | |
| Bnp Paribas Financial Markets | 0.01% | 204,181 | $18,029,182 | $13,365,688 | -$4,663,494 | -25.87% | |
| Bank Of America Corp | 0.00% | 203,273 | $17,949,006 | $13,306,251 | -$4,642,755 | -25.87% | |
| Jpmorgan Chase & Co | 0.00% | 200,790 | $17,077,190 | $13,143,713 | -$3,933,477 | -23.03% | |
| Morgan Stanley | 0.00% | 182,007 | $16,071,228 | $11,914,178 | -$4,157,050 | -25.87% | |
| Alliancebernstein L.P. | 0.01% | 609,607 | $15,490,114 | $39,904,874 | +$24,414,760 | +157.62% | |
| Vanguard Portfolio Management Llc | 0.00% | 169,890 | $15,001,287 | $11,120,999 | -$3,880,288 | -25.87% | |
| Wellington Management Group Llp | 0.00% | 168,139 | $14,846,674 | $11,006,379 | -$3,840,295 | -25.87% | |
| Deutsche Bank Ag\ | 0.00% | 165,367 | $14,601,906 | $10,824,924 | -$3,776,982 | -25.87% | |
| Gilder Gagnon Howe & Co Llc | 0.15% | 159,623 | $14,094,711 | $10,448,922 | -$3,645,789 | -25.87% | |
| Emerald Mutual Fund Advisers Trust | 0.49% | 159,131 | $14,051,267 | $10,416,715 | -$3,634,552 | -25.87% | |
| Price T Rowe Associates Inc | 0.00% | 156,906 | $13,856,000 | $10,271,067 | -$3,584,933 | -25.87% | |
| Softbank Group Corp. | 0.07% | 148,939 | $13,151,314 | $9,749,547 | -$3,401,767 | -25.87% | |
| Nuveen, Llc | 0.00% | 138,965 | $12,270,610 | $9,096,649 | -$3,173,961 | -25.87% | |
| Northern Trust Corp | 0.00% | 130,802 | $11,549,817 | $8,562,299 | -$2,987,518 | -25.87% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.02% | 126,029 | $11,128,361 | $8,249,858 | -$2,878,503 | -25.87% | |
| Citadel Advisors Llc | 0.01% | 122,425 | $10,810,127 | $8,013,940 | -$2,796,187 | -25.87% | |
| Hood River Capital Management Llc | 0.08% | 121,738 | $10,749,465 | $7,968,969 | -$2,780,496 | -25.87% | |
| S Squared Technology, Llc | 3.31% | 120,773 | $10,664,256 | $7,905,801 | -$2,758,455 | -25.87% | |
| Lord, Abbett & Co. Llc | 0.03% | 118,432 | $10,458,000 | $7,752,559 | -$2,705,441 | -25.87% | |
| Marshall Wace, Llp | 0.01% | 109,488 | $9,667,791 | $7,167,084 | -$2,500,707 | -25.87% | |
| Barclays Plc | 0.00% | 99,686 | $8,802,274 | $6,525,446 | -$2,276,828 | -25.87% | |
| Charles Schwab Investment Management Inc | 0.00% | 98,449 | $8,693,047 | $6,444,472 | -$2,248,575 | -25.87% | |
| Vanguard Fiduciary Trust Co | 0.00% | 83,127 | $7,340,114 | $5,441,493 | -$1,898,621 | -25.87% | |
| Wasatch Advisors Lp | 0.05% | 81,559 | $7,201,660 | $5,338,852 | -$1,862,808 | -25.87% | |
| Moody Aldrich Partners Llc | 1.29% | 81,393 | $7,187,002 | $5,327,986 | -$1,859,016 | -25.87% | |
| Acadian Asset Management Llc | 0.01% | 78,902 | $6,963,000 | $5,164,925 | -$1,798,075 | -25.82% | |
| Point72 Asset Management, L.P. | 0.01% | 77,165 | $6,813,670 | $5,051,221 | -$1,762,449 | -25.87% |
Frequently asked questions about AMBQ
Who owns the most AMBQ stock?
The largest holders of AMBQ are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for AMBIQ MICRO INC (AMBQ).
Is AMBQ widely held by superinvestors?
Many widely followed stocks like AMBQ appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly AMBQ is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.