Stock Analysis
Data Source: SEC EDGAR 13F
Updated Hourly

Amprius Technologies Inc (AMPX)

247 + Investors. Track Smart Money conviction in AMPX. See who's accumulating, reducing, or initiating positions.

Current Price
-- USD
Analyst Target
-- (0 analysts)
Upside
0.00%
Net Flow Q/Q
↑ +45
Streak
8Q ▲
Buyers last Q
65%

Smart Money Signals — AMPX

Based on 248 hedge funds · latest filing: 2026 Q1 · updated quarterly

📈

Buying streak — 8 quarters in a row

last 6Q
For 8 consecutive quarters, more hedge funds added AMPX than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.
🏔️

At the ownership peak (100% of max)

100% of all-time peak
248 hedge funds hold AMPX right now — the highest count in 3.0 years. When ownership is this concentrated, any bad news can trigger a chain reaction: one big fund sells, others follow. This is a classic 'crowded trade' — high popularity doesn't equal safety.
🚀

Fast accumulation — +151% more funds vs a year ago

fund count last 6Q
+149 new funds entered over the past year (+151% YoY). That's a rapid rush of institutional money. Fast accumulation often signals a major thesis — but it also means the stock could fall quickly if that thesis breaks.
🟢

More buyers than sellers — 65% buying

179 buying96 selling
Last quarter: 179 funds were net buyers (83 opened a brand new position + 96 added to an existing one). Only 96 were sellers (58 trimmed + 38 sold completely). A clear majority buying is a strong confirmation signal.
📈

More new buyers each quarter (+35 vs last Q)

new funds entering per quarter
Funds opening a new AMPX position: 39 → 87 → 48 → 83. A growing influx of new institutional buyers means the asset is still gathering momentum — the consensus hasn't fully saturated yet.
🔄

Mostly new holders — 58% entered in last year

■ 14% conviction (2yr+) ■ 28% medium ■ 58% new
Only 34 funds (14%) have held >2 years. The majority of current holders are relatively new to the position. New holders tend to sell faster when prices drop — a shallow conviction base that could amplify any sell-off.
💰

Value +177% but shares only +33% — price-driven

Value
+176%
Shares
+33%
Last quarter: the total dollar value of institutional holdings rose +177%, but actual share count only changed +33%. The gap is explained by the stock's price rising — not new buying. Strong value growth with weak share growth means the rally is price momentum, not fresh institutional demand.
➡️

Steady discovery — ~83 new funds/quarter

29 → 39 → 87 → 48 → 83 new funds/Q
New funds entering each quarter: 39 → 87 → 48 → 83. Consistent flow of new institutional buyers without clear acceleration or slowdown.
🌱

Early stage — 66% of holders entered in last year

■ 22% veterans ■ 12% 1-2yr ■ 66% new
Of 265 current holders: 175 (66%) entered in the past year, only 58 (22%) are 2+ year veterans. This is an early-phase institutional idea — still being discovered. High upside potential if the thesis plays out, but thin conviction base.
🏆

Elite ownership — 44% AUM from top-100 funds

44% from top-100 AUM funds
45 of 248 holders are among the 100 largest funds by AUM, controlling 44% of total institutional value in AMPX. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.
5.8
out of 10
Moderate Exit Risk
Exit risk score 5.8/10 — some crowding factors present, but no critical concentration. Watch ownership trend over the next 1–2 quarters for direction.

Methodology note: these Smart Money cards use consecutive 13F disclosure snapshots, not trade-by-trade execution data. "Buying", "selling", "new holders", and "trimmed" refer to quarter-over-quarter changes in reported holders, aggregate shares, or disclosed position values between filings. They are useful for ownership regime analysis and crowding, but they do not imply exact trade timing on the filing date.

Institutional Sentiment Summary — AMPX

In 2026 Q1, 179 hedge funds were net buyers of AMPX (83 opened a new position, 96 added to an existing one), while 96 reduced or exited (58 trimmed, 38 sold completely) — a 65% buyer ratio, indicating clear institutional accumulation. This marks 8 consecutive quarters of net institutional buying — a persistent conviction signal. 44% of total institutional value in AMPX is held by top-100 AUM funds, reflecting elite-tier ownership quality. Net fund flow last quarter: +45 funds (more new holders than closures). Total institutional holders: 248.

Hedge Fund Ownership: AMPX

How many hedge funds hold AMPX — quarterly history vs. share price
Quarterly hedge fund ownership of AMPX vs. share price

Market Analysis: AMPX

Analyst Price Targets

Avg. Price Target
--

Analyst Recommendations

Stock Performance

Real-time

Company Profile: AMPX

-- --

Institutional ownership data sourced from SEC EDGAR Form 13F-HR filings.

Is It Too Late to Buy Amprius Technologies Inc (AMPX) Based on Hedge Fund 13F Filings?

Signal Freshness measures how much AMPX has moved relative to its sector benchmark (XLI) since the 2026 Q1 13F filing. A stock that has barely outrun its sector is still a relatively fresh entry point — the fund's thesis has not yet been priced in by the broader market.

Since Quarter End March 31, 2026 · 78d ago
AMPX
-8.1%
XLI
+10.5%

AMPX outperformed XLI by -18.6% since March 31, 2026.

Since 13F Filing Date May 15, 2026 · 33d ago
AMPX
-8.7%
XLI
+4.2%

Since the filing became public, AMPX outperformed XLI by -12.9% .

Interpretation: The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference. Learn more →

Smart Money Signal ?
Limited Smart Money Interest

No strong consensus or elite conviction detected among institutional holders.

25 top-rated funds 2 high-conviction
Consensus
6.1
/ 10
breadth
×
Elite
1.9
/ 10
conviction
Hedge Fund Positioning: AMPX
247 + Investors

Track Smart Money conviction in AMPX. See who's accumulating, reducing, or initiating positions.

Metric All 13F Filers (2026 Q1) Prior (2025 Q4) Change
Funds Holding 247 203 21.67%
13F Shares 100M 75M 33.5%
Total Value $1.64B $593M 176.84%
New Positions 82 48 +34
Increased Positions 96 85 +11
Closed Positions 38 31 +7
Reduced Positions 54 52 +2
Total Calls 11 7 57.14%
Total Puts 12 5 140.0%
PUT/CALL Ratio 1.09 0.71 Neutral

Statistics: AMPX

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Valuation Measures Data as of: --

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Enterprise Value/EBITDA --
Beta (5Y Monthly) --
Short Ratio (Days to Cover) --
Short % of Float --

Financial Highlights

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Total Cash (mrq) --
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Institutional Holders (2026 Q1)

247 + investors

Explore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in AMPX. Verified SEC 13F-HR filings.

QUARTER:
Top 25 AMPX holders by conviction (% of portfolio weight) — 2026 Q1 · Source: SEC Form 13F
# Investor % of Portfolio Shares Mkt Value
1 Science & Technology Partners, L.P. 2.80% 635,106 $10.7M
2 Palisades Investment Partners, LLC 2.44% 369,476 $6.2M
3 MYDA Advisors LLC 2.04% 735,000 $12.4M
4 Sender Co & Partners, Inc. 1.84% 179,243 $3.0M
5 Thames Capital Management LLC 1.59% 526,832 $8.9M
6 Lisanti Capital Growth, LLC 1.50% 352,375 $5.9M
7 Wolf Hill Capital Management, LP 1.31% 802,925 $13.5M
8 Cornerstone Partners Capital Management, LLC 1.29% 30,706 $518K
9 Essex Investment Management Co LLC 1.19% 445,441 $7.5M
10 SLT Holdings LLC 1.15% 101,050 $1.7M
11 AlphaCentric Advisors LLC 1.01% 60,000 $1.0M
12 Hussman Strategic Advisors, INC. 0.54% 147,000 $2.5M
13 Informed Momentum Co LLC 0.51% 262,036 $4.4M
14 Driehaus Capital Management LLC 0.47% 3,794,178 $64.0M
15 Huntleigh Advisors, Inc. 0.47% 162,905 $2.7M
16 DLD Asset Management, LP 0.36% 232,900 $3.9M
17 Legato Capital Management LLC 0.35% 228,498 $3.9M
18 Oberweis Asset Management Inc/ 0.29% 585,000 $9.9M
19 Apis Capital Advisors, LLC 0.28% 108,000 $1.8M
20 Ardsley Advisory Partners LP 0.27% 125,000 $2.1M
21 Scientech Research LLC 0.24% 17,359 $293K
22 Bayforest Capital Ltd 0.22% 11,477 $194K
23 Stephens Investment Management Group LLC 0.21% 893,108 $15.1M
24 Hood River Capital Management LLC 0.16% 949,147 $16.0M
25 Hidden Cove Wealth Management, LLC 0.15% 13,694 $231K
Investor Ownership
History 		% of Portfolio Prev % Rank Conviction Avg Buy Price 13F Score™ 3Y / 7Y Sell Timing Shares Mkt Value Change Change % Source Quarter Filed

Frequently Asked Questions — Amprius Technologies Inc (AMPX)

What does the Smart Money Trend signal show for AMPX?

Buying streak — 8 quarters in a row: For 8 consecutive quarters, more hedge funds added AMPX than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.

What is the institutional breadth score for AMPX?

More buyers than sellers — 65% buying: Last quarter: 179 funds were net buyers (83 opened a brand new position + 96 added to an existing one). Only 96 were sellers (58 trimmed + 38 sold completely). A clear majority buying is a strong confirmation signal.

What is the fund quality score for AMPX holders?

Elite ownership — 44% AUM from top-100 funds: 45 of 248 holders are among the 100 largest funds by AUM, controlling 44% of total institutional value in AMPX. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.

How long have hedge funds held AMPX?

Mostly new holders — 58% entered in last year: Only 34 funds (14%) have held >2 years. The majority of current holders are relatively new to the position. New holders tend to sell faster when prices drop — a shallow conviction base that could amplify any sell-off.

Is it too late to buy Amprius Technologies Inc (AMPX) following the 2026 Q1 hedge fund 13F filings?

As of today, AMPX has moved -8.7% since the 2026 Q1 13F filing date (May 15, 2026), compared to +4.2% for the XLI sector ETF — an outperformance of -12.9%. Since the quarter end (March 31, 2026), AMPX has gained -8.1% vs +10.5% for XLI. The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference.

Where does this institutional ownership data come from?

All holdings data is sourced from SEC Form 13F filings, which institutional investment managers with over $100 million in assets are required to submit quarterly. Data is parsed directly from SEC EDGAR.

Disclaimer: The information on this page is for informational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Institutional holdings data is sourced from SEC Form 13F filings and reflects positions as of the filing date. Past performance of any fund or portfolio is not indicative of future results. 13Foresight is not a registered investment adviser. Always conduct your own due diligence before making investment decisions.

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