Amprius Technologies, Inc. (AMPX) — Institutional Holders, Q2 2026

266 institutional investment managers reported a AMPX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.4B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← AMPX stock profile

AMPX in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

110

Trimmed

Sold out

Biggest buyers

JUPITER ASSET MANAGEMENT LTDNew · +2,133,397 sh+$29.6M
BlackRockAdded · +2,109,481 sh+$29.2M
MORGAN STANLEYAdded · +1,943,338 sh+$26.9M
UBS Group AGAdded · +1,760,715 sh+$24.4M
LMR Partners LLPNew · +1,750,850 sh+$24.3M

Biggest sellers

DRIEHAUS CAPITAL MANAGEMENTTrimmed · -2,448,909 sh-$33.9M
MASSACHUSETTS FINANCIAL SERVICESTrimmed · -1,518,492 sh-$21.0M
WILLIAM BLAIR INVESTMENT MANAGEMENTSold out · -1,170,131 sh-$16.2M
MARSHALL WACE, LLPTrimmed · -1,096,399 sh-$15.2M
JPMORGAN CHASETrimmed · -1,092,808 sh-$15.1M

AMPX 13F holders ranked 1–100 of 266

Institutional investors reporting a position in Amprius Technologies, Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 11,335,092 sh	11,335,092	$157.1M	<0.01%	+22.9%
2	VANGUARD CAPITAL MANAGEMENT#2 · 5,562,985 sh	5,562,985	$77.1M	<0.01%	+13.3%
3	MORGAN STANLEY#3 · 5,105,505 sh	5,105,505	$70.8M	<0.01%	+61.5%
4	TWO SIGMA INVESTMENTS#4 · 4,318,630 sh	4,318,630	$59.9M	0.04%	+23.2%
5	UBS Group AG#5 · 4,073,080 sh	4,073,080	$56.4M	<0.01%	+76.2%
6	GEODE CAPITAL MANAGEMENT#6 · 3,520,655 sh	3,520,655	$48.8M	<0.01%	+25.1%
7	JANE STREET GROUP#7 · 3,401,071 sh	3,401,071	$47.1M	<0.01%	-18.3%
8	STATE STREET#8 · 3,240,285 sh	3,240,285	$44.9M	<0.01%	+19.5%
9	LMR Partners LLP#9 · 3,650,110 sh	3,650,110	$35.4M	0.13%	-18.7%
10	GOLDMAN SACHS GROUP#10 · 2,542,294 sh	2,542,294	$35.2M	<0.01%	+14.2%
11	JUPITER ASSET MANAGEMENT LTD#11 · 2,133,397 sh	2,133,397	$29.6M	0.15%	New
12	CITADEL ADVISORS#12 · 1,676,344 sh	1,676,344	$23.2M	<0.01%	+16.5%
13	PRICE T ROWE ASSOCIATES#13 · 1,635,883 sh	1,635,883	$22.7M	<0.01%	-13.8%
14	VANGUARD PORTFOLIO MANAGEMENT#14 · 1,457,629 sh	1,457,629	$20.2M	<0.01%	+35.8%
15	Hood River Capital Management#15 · 1,412,516 sh	1,412,516	$19.6M	0.14%	+48.8%
16	RENAISSANCE TECHNOLOGIES#16 · 1,408,925 sh	1,408,925	$19.5M	0.03%	+291.9%
17	DRIEHAUS CAPITAL MANAGEMENT#17 · 1,345,269 sh	1,345,269	$18.6M	0.11%	-64.5%
18	Baird Financial Group#18 · 1,324,909 sh	1,324,909	$18.4M	0.03%	-16.4%
19	HEALTHCARE OF ONTARIO PENSION PLAN FUND#19 · 1,248,700 sh	1,248,700	$17.3M	0.02%	New
20	NORTHERN#20 · 1,229,628 sh	1,229,628	$17.0M	<0.01%	+20.2%
21	MILLENNIUM MANAGEMENT#21 · 1,208,017 sh	1,208,017	$16.7M	<0.01%	+16.7%
22	DEUTSCHE BANK AG\#22 · 1,196,197 sh	1,196,197	$16.6M	<0.01%	+36.7%
23	BARCLAYS PLC#23 · 1,180,878 sh	1,180,878	$16.4M	<0.01%	+11.9%
24	CHARLES SCHWAB INVESTMENT MANAGEMENT#24 · 1,176,959 sh	1,176,959	$16.3M	<0.01%	+13.2%
25	Point72 Asset Management, L.P.#25 · 1,139,811 sh	1,139,811	$15.8M	0.02%	+3982.3%
26	Qube Research & Technologies Ltd#26 · 1,136,175 sh	1,136,175	$15.7M	0.01%	-7.4%
27	SUSQUEHANNA INTERNATIONAL GROUP, LLP#27 · 1,100,269 sh	1,100,269	$15.2M	<0.01%	+1133.9%
28	Trexquant Investment#28 · 1,097,532 sh	1,097,532	$15.2M	0.09%	+53.2%
29	FIRST ADVISORS#29 · 1,037,344 sh	1,037,344	$14.4M	<0.01%	+162.9%
30	Nearwater Capital Markets, Ltd#30 · 1,034,700 sh	1,034,700	$14.3M	0.25%	New
31	VANGUARD FIDUCIARY#31 · 989,691 sh	989,691	$13.7M	<0.01%	+13.4%
32	Shannon River Fund Management#32 · 838,887 sh	838,887	$11.6M	1.04%	New
33	TUDOR INVESTMENT ET AL#33 · 747,428 sh	747,428	$10.4M	0.01%	+78.1%
34	IMC-Chicago#34 · 734,114 sh	734,114	$10.2M	<0.01%	+1071.2%
35	STIFEL FINANCIAL#35 · 731,470 sh	731,470	$10.1M	<0.01%	-0.2%
36	Stephens Investment Management Group#36 · 714,324 sh	714,324	$9.9M	0.11%	-20.0%
37	D. E. Shaw#37 · 671,812 sh	671,812	$9.3M	<0.01%	-39.2%
38	TimesSquare Capital Management#38 · 641,990 sh	641,990	$8.9M	0.13%	New
39	OBERWEIS ASSET MANAGEMENT#39 · 636,200 sh	636,200	$8.8M	0.18%	+8.8%
40	Caption Management#40 · 1,432,795 sh	1,432,795	$8.4M	0.04%	+32.1%
41	Invesco Ltd.#41 · 571,613 sh	571,613	$7.9M	<0.01%	+14.6%
42	Wolf Hill Capital Management#42 · 527,259 sh	527,259	$7.3M	0.61%	-34.3%
43	MIRAE ASSET GLOBAL ETFS Ltd.#43 · 523,062 sh	523,062	$7.2M	<0.01%	+6.8%
44	MASSACHUSETTS FINANCIAL SERVICES#44 · 506,268 sh	506,268	$7.0M	<0.01%	-75.0%
45	OPPENHEIMER#45 · 504,746 sh	504,746	$7.0M	—	+22.4%
46	DnB Asset Management AS#46 · 491,965 sh	491,965	$6.8M	0.02%	+221.5%
47	POLEN CAPITAL MANAGEMENT#47 · 465,598 sh	465,598	$6.5M	0.06%	+10.3%
48	SEI INVESTMENTS#48 · 443,230 sh	443,230	$6.1M	<0.01%	-23.5%
49	Coppell Advisory Solutions#49 · 500 sh	500	$6.1M	0.50%	New
50	FEDERATED HERMES#50 · 428,693 sh	428,693	$5.9M	<0.01%	+152.5%
51	ALGERT GLOBAL#51 · 424,833 sh	424,833	$5.9M	0.07%	+97.3%
52	Bank of New York Mellon#52 · 417,415 sh	417,415	$5.8M	<0.01%	+39.7%
53	HighTower Advisors#53 · 416,434 sh	416,434	$5.8M	<0.01%	+3681.3%
54	Nuveen#54 · 397,802 sh	397,802	$5.5M	<0.01%	+63.1%
55	Palisades Investment Partners#55 · 368,459 sh	368,459	$5.1M	1.45%	-0.3%
56	Sender & Partners#56 · 355,692 sh	355,692	$4.9M	1.43%	+98.4%
57	WELLINGTON MANAGEMENT GROUP LLP#57 · 342,797 sh	342,797	$4.8M	<0.01%	New
58	Allspring Global Investments#58 · 345,972 sh	345,972	$4.7M	<0.01%	-19.8%
59	BANK OF AMERICA#59 · 327,846 sh	327,846	$4.5M	<0.01%	+23.5%
60	SILVERCREST ASSET MANAGEMENT GROUP#60 · 305,581 sh	305,581	$4.2M	0.03%	-4.5%
61	SG Americas Securities#61 · 288,368 sh	288,368	$4.0M	<0.01%	-31.8%
62	ESSEX INVESTMENT MANAGEMENT#62 · 284,595 sh	284,595	$3.9M	—	-36.1%
63	CREDIT AGRICOLE S A#63 · 265,189 sh	265,189	$3.7M	<0.01%	New
64	HSBC PLC#64 · 259,508 sh	259,508	$3.6M	<0.01%	New
65	Swiss National Bank#65 · 247,500 sh	247,500	$3.4M	<0.01%	+6.5%
66	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#66 · 220,103 sh	220,103	$3.1M	<0.01%	-2.3%
67	Janney Montgomery Scott#67 · 309,051 sh	309,051	$3.0M	<0.01%	+1.8%
68	GROUP ONE TRADING, L.P.#68 · 213,312 sh	213,312	$3.0M	<0.01%	New
69	Voleon Capital Management#69 · 205,345 sh	205,345	$2.8M	0.05%	-31.2%
70	Russell Investments Group, Ltd.#70 · 202,959 sh	202,959	$2.8M	<0.01%	-62.7%
71	WELLS FARGO & COMPANY#71 · 197,771 sh	197,771	$2.7M	<0.01%	+115.2%
72	Amundi#72 · 196,767 sh	196,767	$2.7M	<0.01%	+19.6%
73	BLAIR WILLIAM#73 · 194,712 sh	194,712	$2.7M	<0.01%	+53.8%
74	Aquatic Capital Management#74 · 189,235 sh	189,235	$2.6M	0.09%	-33.1%
75	HITE Hedge Asset Management#75 · 186,393 sh	186,393	$2.6M	0.14%	+427.8%
76	ALLIANCEBERNSTEIN L.P.#76 · 152,060 sh	152,060	$2.6M	<0.01%	+40.5%
77	ALPS ADVISORS#77 · 184,483 sh	184,483	$2.6M	0.01%	+10.2%
78	NEW YORK STATE COMMON RETIREMENT FUND#78 · 184,227 sh	184,227	$2.6M	<0.01%	+11.2%
79	BNP PARIBAS FINANCIAL MARKETS#79 · 183,631 sh	183,631	$2.5M	<0.01%	-35.9%
80	XTX Topco Ltd#80 · 180,174 sh	180,174	$2.5M	0.03%	+81.4%
81	ExodusPoint Capital Management#81 · 179,272 sh	179,272	$2.5M	0.02%	New
82	AQR CAPITAL MANAGEMENT#82 · 173,155 sh	173,155	$2.4M	<0.01%	+25.7%
83	Huntleigh Advisors#83 · 171,028 sh	171,028	$2.4M	0.33%	+5.0%
84	RHUMBLINE ADVISERS#84 · 167,963 sh	167,963	$2.3M	<0.01%	+27.2%
85	VOYA INVESTMENT MANAGEMENT#85 · 158,658 sh	158,658	$2.2M	<0.01%	+250.0%
86	DRW Securities#86 · 356,445 sh	356,445	$2.1M	0.05%	+6.3%
87	CANTOR FITZGERALD, L. P.#87 · 147,909 sh	147,909	$2.1M	0.02%	New
88	LPL Financial#88 · 147,233 sh	147,233	$2.0M	<0.01%	+9.2%
89	MARSHALL WACE, LLP#89 · 131,200 sh	131,200	$1.8M	<0.01%	-89.3%
90	Marex Group plc#90 · 126,930 sh	126,930	$1.8M	<0.01%	+219.7%
91	JPMORGAN CHASE#91 · 123,377 sh	123,377	$1.7M	<0.01%	-89.9%
92	Clear Street Group#92 · 122,474 sh	122,474	$1.7M	<0.01%	New
93	CANADA PENSION PLAN INVESTMENT BOARD#93 · 119,600 sh	119,600	$1.7M	<0.01%	New
94	Foundations Investment Advisors#94 · 119,465 sh	119,465	$1.7M	0.02%	+17.2%
95	SLT#95 · 117,750 sh	117,750	$1.6M	—	+16.5%
96	ROYAL BANK OF CANADA#96 · 115,322 sh	115,322	$1.6M	<0.01%	+13.2%
97	Lisanti Capital Growth#97 · 113,710 sh	113,710	$1.6M	0.35%	-67.7%
98	NOMURA#98 · 109,808 sh	109,808	$1.5M	<0.01%	New
99	Legal & General Group Plc#99 · 107,923 sh	107,923	$1.5M	<0.01%	+24.3%
100	HUSSMAN STRATEGIC ADVISORS#100 · 105,000 sh	105,000	$1.5M	0.34%	-28.6%

Funds that sold out of AMPX in Q2 2026 (46)

Held AMPX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held AMPX in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
WILLIAM BLAIR INVESTMENT MANAGEMENT1,170,131 sh	1,170,131	$19.7M
HRT FINANCIAL1,002,658 sh	1,002,658	$16.9M
MYDA Advisors735,000 sh	735,000	$12.4M
Science & Technology Partners, L.P.635,106 sh	635,106	$10.7M
VOLORIDGE INVESTMENT MANAGEMENT531,998 sh	531,998	$9.0M
THAMES CAPITAL MANAGEMENT526,832 sh	526,832	$8.9M
PUBLIC SECTOR PENSION INVESTMENT BOARD332,000 sh	332,000	$5.6M
Informed Momentum262,036 sh	262,036	$4.4M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP227,132 sh	227,132	$3.8M
Y-Intercept (Hong Kong) Ltd164,224 sh	164,224	$2.8M
Schonfeld Strategic Advisors135,774 sh	135,774	$2.3M
ARDSLEY ADVISORY PARTNERS125,000 sh	125,000	$2.1M
CenterBook Partners118,257 sh	118,257	$2.0M
APIS CAPITAL ADVISORS108,000 sh	108,000	$1.8M
Alberta Investment Management82,000 sh	82,000	$1.4M
OCCUDO QUANTITATIVE STRATEGIES65,508 sh	65,508	$1.4M
TWINBEECH CAPITAL76,000 sh	76,000	$1.3M
BOOTHBAY FUND MANAGEMENT73,064 sh	73,064	$1.2M
Focus Partners Wealth45,474 sh	45,474	$766.7K
Harbour Capital Advisors31,480 sh	31,480	$714.3K
FORA Capital41,598 sh	41,598	$700.3K
Richmond Investment Services39,994 sh	39,994	$674.3K
Gotham Asset Management39,517 sh	39,517	$666.3K
Sigma Planning30,285 sh	30,285	$510.6K
Swiss Life Asset Management Ltd11,164 sh	11,164	$388.9K
Scientech Research17,359 sh	17,359	$292.7K
Verition Fund Management17,045 sh	17,045	$287.4K
Pekin Hardy Strauss15,100 sh	15,100	$254.6K
Bridgefront Capital13,571 sh	13,571	$228.8K
Bayforest Capital Ltd11,477 sh	11,477	$193.5K
Joel Isaacson10,000 sh	10,000	$168.6K
Cambridge Financial Group10,000 sh	10,000	$168.6K
ACADIAN ASSET MANAGEMENT5,214 sh	5,214	$87.0K
MAI Capital Management4,803 sh	4,803	$81.0K
Kemnay Advisory Services765 sh	765	$12.9K
Golden State Equity Partners600 sh	600	$10.1K
Optiver Holding B.V.378 sh	378	$6.4K
Quarry344 sh	344	$5.8K
HIGHLINE WEALTH PARTNERS300 sh	300	$5.1K
CoreCap Advisors246 sh	246	$4.1K
Root Financial Partners73 sh	73	$1.2K
True Wealth Design61 sh	61	$1.0K
DecisionPoint Financial37 sh	37	$624.00
Versant Capital Management18 sh	18	$303.00
TWIN PEAKS WEALTH ADVISORS9 sh	9	$152.00
Western Wealth Management4 sh	4	$67.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.