Vanguard Group Inc. Acquires 1,757,395 Shares of Amprius Technologies, Inc. $AMPX

Vanguard Group Inc. grew its stake in shares of Amprius Technologies, Inc. (NYSE:AMPX) by 37.0% during the 3rd quarter, according to the company in its most recent disclosure with the Securities and Exchange Commission (SEC). The institutional investor owned 6,512,620 shares of the company’s stock after acquiring an additional 1,757,395 shares during the period. Vanguard Group Inc. owned 0.05% of Amprius Technologies worth $68,513,000 at the end of the most recent reporting period.

A number of other large investors have also recently made changes to their positions in the stock. Bank of America Corp DE grew its position in shares of Amprius Technologies by 31.1% in the fourth quarter. Bank of America Corp DE now owns 12,890 shares of the company’s stock valued at $36,000 after purchasing an additional 3,055 shares in the last quarter. AQR Capital Management LLC raised its stake in shares of Amprius Technologies by 86.7% during the 1st quarter. AQR Capital Management LLC now owns 77,764 shares of the company’s stock valued at $208,000 after purchasing an additional 36,116 shares during the period. Millennium Management LLC raised its stake in shares of Amprius Technologies by 94.5% during the 1st quarter. Millennium Management LLC now owns 1,396,013 shares of the company’s stock valued at $3,741,000 after purchasing an additional 678,442 shares during the period. Goldman Sachs Group Inc. lifted its holdings in Amprius Technologies by 128.6% during the 1st quarter. Goldman Sachs Group Inc. now owns 244,646 shares of the company’s stock worth $656,000 after purchasing an additional 137,640 shares in the last quarter. Finally, Rhumbline Advisers lifted its holdings in Amprius Technologies by 61.1% during the 1st quarter. Rhumbline Advisers now owns 15,690 shares of the company’s stock worth $42,000 after purchasing an additional 5,951 shares in the last quarter. 5.04% of the stock is owned by institutional investors.

Insider Activity at Amprius Technologies

In related news, CTO Constantin Ionel Stefan sold 492,827 shares of the company’s stock in a transaction that occurred on Thursday, January 22nd. The shares were sold at an average price of $12.04, for a total value of $5,933,637.08. Following the transaction, the chief technology officer directly owned 748,696 shares in the company, valued at approximately $9,014,299.84. This represents a 39.70% decrease in their ownership of the stock. The transaction was disclosed in a document filed with the Securities & Exchange Commission, which is accessible through the SEC website. Also, Director Kang Sun sold 950,548 shares of the firm’s stock in a transaction that occurred on Friday, January 16th. The shares were sold at an average price of $11.07, for a total transaction of $10,522,566.36. Following the completion of the sale, the director directly owned 1,403,651 shares in the company, valued at $15,538,416.57. This represents a 40.38% decrease in their ownership of the stock. The SEC filing for this sale provides additional information. Over the last 90 days, insiders sold 2,392,269 shares of company stock worth $26,384,359. 12.90% of the stock is owned by company insiders.

Amprius Technologies Stock Up 9.9%

Amprius Technologies stock opened at $16.37 on Friday. Amprius Technologies, Inc. has a 52 week low of $1.70 and a 52 week high of $17.29. The business has a 50-day simple moving average of $10.88 and a 200 day simple moving average of $10.69. The stock has a market cap of $2.14 billion, a price-to-earnings ratio of -48.15 and a beta of 3.04.

Amprius Technologies (NYSE:AMPX) last announced its earnings results on Wednesday, March 4th. The company reported ($0.01) earnings per share for the quarter, topping analysts’ consensus estimates of ($0.04) by $0.03. Amprius Technologies had a negative return on equity of 25.77% and a negative net margin of 60.30%.The business had revenue of $25.23 million for the quarter, compared to analyst estimates of $22.91 million. Amprius Technologies has set its FY 2026 guidance at –0.060 EPS. On average, research analysts anticipate that Amprius Technologies, Inc. will post -0.45 earnings per share for the current year.

Analysts Set New Price Targets

A number of research analysts have weighed in on AMPX shares. William Blair reaffirmed an “outperform” rating on shares of Amprius Technologies in a report on Friday. Craig Hallum increased their price target on shares of Amprius Technologies from $17.00 to $21.00 and gave the stock a “buy” rating in a report on Friday. Weiss Ratings restated a “sell (e+)” rating on shares of Amprius Technologies in a research report on Wednesday, January 21st. Oppenheimer reaffirmed an “outperform” rating and set a $17.00 price objective on shares of Amprius Technologies in a research note on Tuesday, December 23rd. Finally, Cantor Fitzgerald upped their target price on shares of Amprius Technologies from $16.00 to $20.00 and gave the stock an “overweight” rating in a report on Friday. Eight equities research analysts have rated the stock with a Buy rating and one has issued a Sell rating to the company. Based on data from MarketBeat, the stock currently has an average rating of “Moderate Buy” and a consensus target price of $18.38.

Amprius Technologies News Roundup

Here are the key news stories impacting Amprius Technologies this week:

• Positive Sentiment: Q4 2025 results beat expectations — revenue of ~$25.2M (137% YoY), a smaller-than-expected loss, the company’s first positive quarterly adjusted EBITDA, and 2026 guidance targeting at least $125M in revenue and a materially reduced net loss. This combination explains the bullish sentiment and supports growth expectations. Amprius Technologies (AMPX) Is Up 29.3% After Issuing 2026 Revenue And Profitability Guidance – Has The Bull Case Changed?
• Positive Sentiment: Analyst upgrades and higher price targets: Roth MKM reaffirmed a Buy and bumped its PT to $20 (from $16), and Craig-Hallum raised its PT to $21 (from $17). Upgrades add credibility and can attract more institutional flows. Benzinga Craig-Hallum PT Raised to $21
• Positive Sentiment: Institutional interest, analyst coverage and bullish research notes (MarketBeat et al.) are increasing — analysts are raising targets and coverage, which can amplify momentum and reduce float available to retail sellers. Amprius Stock Price Gets Amped by Hyper Growth Outlook
• Positive Sentiment: Derivative and volume signals: unusually large call-option volume and heavy share trading indicate speculative and directional conviction from traders, which can accelerate short-term gains. (Observed trading activity reported on 3/5.)
• Neutral Sentiment: One-time charge for a discontinued Colorado lease was disclosed; management frames it as a non-recurring item that clarifies manufacturing strategy (shift to contract manufacturers) and improves cash-flow visibility. That reduces future capex needs but creates a near-term hit. Amprius Technologies Reports Fourth Quarter and Fiscal Year 2025 Financial Results
• Neutral Sentiment: Media/analyst pieces debating valuation and timing — several write-ups ask if the rally already prices in most of the upside, prompting mixed views among longer-term investors. These discussions can increase volatility as momentum and value investors clash. Is It Too Late To Consider Amprius Technologies (AMPX) After Its Recent Share Price Surge
• Negative Sentiment: Company remains unprofitable on a GAAP basis (full-year net loss and negative margins); analysts still forecast negative EPS for the year. Continued execution is required to translate revenue growth into sustained profitability — a risk that could weigh on the stock if growth or margin improvement stalls. Amprius Technologies (AMPX) Reports Q4 Loss, Tops Revenue Estimates

Amprius Technologies Company Profile

Amprius Technologies, Inc (NYSE: AMPX) is a U.S.-based developer of high-energy-density lithium-ion batteries that leverage silicon anode technology to deliver performance levels beyond conventional graphite-based cells. The company’s batteries are designed to offer industry-leading gravimetric energy density, enabling longer run times and reduced weight for portable power applications. Amprius blends advanced materials science and scalable manufacturing processes to commercialize next-generation battery solutions.

At the core of Amprius’ product portfolio are cylindrical and prismatic cells that employ a proprietary silicon nanowire anode, which supports high charge/discharge rates while maintaining cycle life.