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Amprius Technologies, Inc. hedge fund holdings

AMPXNYSE
$9.67+0.06 (+0.62% today)

Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.

Price vs funds buying and selling

AMPX · close · 13FReported Aug 14, 2026

Price vs funds buying and selling data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-22.6%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
DateCategoryPersonRoleActionAmountChange in holding
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.

Price and fund activity data

Quarterly 13F fund buying and selling activity
QuarterFunds buyingFunds sellingBoughtSoldFilersReported
Q2 20257230$79.8M$7.89M119Aug 14, 2025
Q3 202513137$371M$94.1M188Nov 14, 2025
Q4 202510268$125M$94.9M203Feb 14, 2026
Q1 202614378$501M$197M246May 15, 2026
Q2 202614990$348M$254M252Aug 14, 2026

Quarterly action breakdown

Q2 2026
252 filers
New position
43
$68M+4.9M sh
Increased
106
$280M+20.2M sh
Reduced
52
-$179M-12.9M sh
Out / sold
38
-$74.1M-5.35M sh
Last 4 quarters · free
Reported Aug 14, 2026
FundActionChange in dollarValue% of portfolioReported
Driehaus Capital Management LLCReduce 64.54%-$33.9M$18.6M0.11%Aug 14, 2026
Massachusetts Financial Services CoReduce 75.00%-$21M$7.02M0.00%Aug 3, 2026
William Blair Investment Management, LLCSell 100%-$19.7M$00.00%Aug 12, 2026
Healthcare of Ontario Pension Plan Trust FundNew Buy+$17.3M$17.3M0.02%Aug 13, 2026
Nearwater Capital Markets, LtdNew Buy+$14.3M$14.3M0.25%Aug 14, 2026
Shannon River Fund Management LLCNew Buy+$11.6M$11.6M1.04%Aug 13, 2026
Science & Technology Partners, L.P.Sell 100%-$10.7M$00.00%Aug 14, 2026
IMC-Chicago, LLCAdded 1071.23%+$9.31M$10.2M0.00%Aug 6, 2026
Voloridge Investment Management, LLCSell 100%-$8.97M$00.00%Aug 14, 2026
First Trust Advisors LPAdded 162.91%+$8.91M$14.4M0.01%Aug 11, 2026
Thames Capital Management LLCSell 100%-$8.88M$00.00%Aug 12, 2026
Hood River Capital Management LLCAdded 48.82%+$6.42M$19.6M0.14%Aug 14, 2026
Aristeia Capital, L.L.C.Reduce 88.28%-$6.25M$830K0.01%Aug 14, 2026
Public Sector Pension Investment BoardSell 100%-$5.6M$00.00%Aug 13, 2026
CSS LLCSell 100%-$5.19M$00.00%Aug 14, 2026
Wellington Management Group LLPNew Buy+$4.75M$4.75M0.00%Aug 14, 2026
DNB Asset Management ASAdded 221.48%+$4.7M$6.82M0.02%Aug 11, 2026
Wolf Hill Capital Management, LPReduce 34.33%-$3.82M$7.31M0.61%Aug 13, 2026
Calamos Advisors LLCReduce 74.17%-$3.75M$1.31M0.00%Jul 31, 2026
Credit Agricole S ANew Buy+$3.68M$3.68M0.01%Aug 14, 2026
Baird Financial Group, Inc.Reduce 16.41%-$3.61M$18.4M0.03%Aug 12, 2026
Lisanti Capital Growth, LLCReduce 67.73%-$3.31M$1.58M0.35%Aug 10, 2026
Stephens Investment Management Group LLCReduce 20.02%-$2.48M$9.9M0.11%Jul 29, 2026
Sender Co & Partners, Inc.Added 98.44%+$2.45M$4.93M1.43%Aug 14, 2026
Essex Investment Management Co LLCReduce 36.11%-$2.23M$3.94M0.52%Aug 6, 2026
HITE Hedge Asset Management LLCAdded 427.83%+$2.09M$2.58M0.14%Aug 14, 2026
Zevenbergen Capital Investments LLCAdded 61.02%+$2M$5.29M0.12%Jul 16, 2026
CenterBook Partners LPSell 100%-$1.99M$00.00%Aug 11, 2026
Apis Capital Advisors, LLCSell 100%-$1.82M$00.00%Aug 14, 2026
Canada Pension Plan Investment BoardNew Buy+$1.66M$1.66M0.00%Aug 14, 2026
Legato Capital Management LLCReduce 48.01%-$1.52M$1.65M0.14%Aug 6, 2026
Faithward Advisors, LLCNew Buy+$1.42M$1.42M0.17%Aug 12, 2026
Bouvel Investment Partners, LLCNew Buy+$1.38M$1.38M0.31%Jul 17, 2026
Voleon Capital Management LPReduce 31.17%-$1.29M$2.85M0.05%Aug 14, 2026
Oppenheimer & Co IncAdded 22.36%+$1.28M$7M0.07%Aug 3, 2026
Jain Global LLCAdded 363.91%+$993K$1.27M0.01%Aug 14, 2026
Blair William & CoAdded 53.77%+$944K$2.7M0.01%Aug 11, 2026
State of New Jersey Common Pension Fund DNew Buy+$895K$895K0.00%Aug 4, 2026
Harbour Capital Advisors, LLCSell 100%-$714K$00.00%Jul 15, 2026
Oberweis Asset Management Inc/Added 8.75%+$710K$8.82M0.18%Aug 14, 2026
FORA Capital, LLCSell 100%-$700K$00.00%Aug 13, 2026
Axq Capital, LPReduce 81.76%-$690K$154K0.02%Aug 6, 2026
Richmond Investment Services, LLCSell 100%-$674K$00.00%Jul 27, 2026
Gotham Asset Management, LLCSell 100%-$666K$00.00%Aug 14, 2026
Polen Capital Management LLCAdded 10.29%+$602K$6.45M0.06%Aug 4, 2026
Hussman Strategic Advisors, Inc.Reduce 28.57%-$582K$1.46M0.34%Aug 3, 2026
Sigma Planning CorpSell 100%-$511K$00.00%Aug 7, 2026
Teachers Retirement System of the State of KentuckyNew Buy+$472K$472K0.00%Aug 12, 2026
Abu Dhabi Investment Council Co P.J.S.CNew Buy+$415K$415K0.06%Aug 13, 2026
Geneos Wealth Management Inc.Added 164.37%+$390K$628K0.01%Aug 6, 2026
Swiss Life Asset Management LtdSell 100%-$389K$00.00%Jul 29, 2026
Holocene Advisors, LPNew Buy+$377K$377K0.00%Aug 14, 2026
Freestone Grove Partners LPNew Buy+$289K$289K0.00%Aug 14, 2026
Vanderbilt UniversityNew Buy+$276K$276K0.04%Jul 22, 2026
Pekin Hardy Strauss, Inc.Sell 100%-$255K$00.00%Jul 30, 2026
Inspire Investing, LLCAdded 58.80%+$253K$683K0.03%Aug 12, 2026
Foundations Investment Advisors, LLCAdded 17.25%+$244K$1.66M0.02%Aug 14, 2026
Midwest Trust CoNew Buy+$243K$243K0.00%Aug 5, 2026
Alps Advisors IncAdded 10.19%+$236K$2.56M0.01%Jul 29, 2026
SLT Holdings LLCAdded 16.53%+$231K$1.63M1.02%Jul 17, 2026
Bridgefront Capital, LLCSell 100%-$229K$00.00%Aug 14, 2026
Zazove Associates LLCReduce 26.54%-$215K$595K0.05%Jul 16, 2026
Inspire Advisors, LLCNew Buy+$212K$212K0.01%Aug 13, 2026
Vident Advisory, LLCAdded 34.43%+$211K$823K0.01%Aug 12, 2026
Silvercrest Asset Management Group LLCReduce 4.47%-$198K$4.24M0.03%Aug 14, 2026
Bayforest Capital LtdSell 100%-$194K$00.00%Aug 5, 2026
Quantinno Capital Management LPAdded 93.62%+$182K$377K0.00%Aug 13, 2026
Titleist Asset Management, LLCNew Buy+$173K$173K0.01%Jul 20, 2026
Joel Isaacson & Co., LLCSell 100%-$169K$00.00%Aug 4, 2026
Cambridge Financial Group, LLCSell 100%-$169K$00.00%Jul 14, 2026
Alpine Woods Capital Investors, LLCNew Buy+$167K$167K0.04%Aug 7, 2026
Trustees of the University of PennsylvaniaNew Buy+$151K$151K0.15%Aug 10, 2026
Wealthfront Advisers LLCAdded 96.57%+$148K$301K0.00%Aug 7, 2026
Tidal Investments LLCAdded 50.13%+$143K$429K0.00%Aug 13, 2026
Polymer Capital Management (US) LLCAdded 36.68%+$143K$533K0.07%Aug 14, 2026
Thrivent Financial for LutheransNew Buy+$142K$142K0.00%Aug 14, 2026
Qsemble Capital Management, LPAdded 20.90%+$137K$793K0.10%Aug 3, 2026
Huntleigh Advisors, Inc.Added 4.99%+$113K$2.37M0.33%Aug 4, 2026
Flputnam Investment Management CoAdded 13.79%+$108K$893K0.01%Aug 6, 2026
Lanark Financial, Inc.Added 32.46%+$79.3K$324K0.02%Jul 21, 2026
Hidden Cove Wealth Management, LLCAdded 28.73%+$54.5K$244K0.13%Jul 22, 2026
Graham Capital Management, L.P.Reduce 24.74%-$47.2K$144K0.00%Aug 14, 2026
Xponance LLCAdded 23.20%+$34.4K$183K0.00%Aug 10, 2026
Nicolet Bankshares IncReduce 10.54%-$19.4K$165K0.01%Aug 11, 2026
Palisades Investment Partners, LLCReduce 0.28%-$14.1K$5.11M1.45%Aug 4, 2026
Armstrong Advisory Group, IncAdded 658.11%+$13.5K$15.6K0.00%Jul 13, 2026
Bank of New HampshireAdded 53.10%+$13.2K$38K0.01%Jul 14, 2026
Kemnay Advisory Services Inc.Sell 100%-$12.9K$00.00%Aug 14, 2026
Global X Japan Co., Ltd.Added 37.12%+$7.89K$29.1K0.00%Jul 14, 2026
Quarry LPSell 100%-$5.8K$00.00%Aug 14, 2026
Highline Wealth Partners LLCSell 100%-$5.06K$00.00%Jul 15, 2026
Kingswood Wealth Advisors, LLCReduce 0.65%-$4.38K$671K0.03%Jul 27, 2026
BNP PARIBAS ASSET MANAGEMENT Holding S.A.Reduce 6.88%-$2.12K$28.7K0.00%Aug 13, 2026
Caldwell Sutter Capital, Inc.New Buy+$1.39K$1.39K0.00%Aug 5, 2026
Vermillion Wealth Management, Inc.New Buy+$1.16K$1.16K0.00%Jul 16, 2026
&PartnersAdded 0.40%+$721$181K0.00%Aug 14, 2026
DecisionPoint Financial, LLCSell 100%-$624$00.00%Aug 5, 2026
Aspect Partners, LLCAdded 235.29%+$554$7900.00%Jul 16, 2026
MassMutual Private Wealth & Trust, FSBReduce 57.58%-$527$3880.00%Jul 2, 2026
Silver Grove Financial Group, Inc.New Buy+$430$4300.00%Aug 13, 2026

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