Ambiq Micro, Inc. (NYSE:AMBQ) Short Interest Up 248.9% in March

Key Points

• Short interest up 248.9% in March to 1,192,495 shares (about 5.6% of outstanding shares), with a days-to-cover ratio of 2.7 based on average daily volume.
• Company insiders have been trimming positions—directors and the CTO sold shares on Jan. 26, and insiders sold 18,611 shares worth roughly $573,008 over the last 90 days.
• Analysts are mixed (average rating "Hold", consensus target $40), while Ambiq beat quarterly EPS and revenue estimates but remains unprofitable and guided Q1 FY2026 EPS of -0.390 to -0.330.

Ambiq Micro, Inc. (NYSE:AMBQ - Get Free Report) was the target of a large growth in short interest in the month of March. As of March 31st, there was short interest totaling 1,192,495 shares, a growth of 248.9% from the March 15th total of 341,783 shares. Approximately 5.6% of the shares of the company are sold short. Based on an average daily volume of 445,756 shares, the days-to-cover ratio is currently 2.7 days.

Analyst Ratings Changes

A number of research analysts recently commented on AMBQ shares. Bank of America restated a "neutral" rating and issued a $35.00 price target on shares of Ambiq Micro in a research report on Thursday, March 5th. Needham & Company LLC reiterated a "buy" rating on shares of Ambiq Micro in a research note on Thursday, March 5th. Zacks Research lowered shares of Ambiq Micro from a "hold" rating to a "strong sell" rating in a report on Friday, March 13th. Finally, Wall Street Zen raised shares of Ambiq Micro from a "sell" rating to a "hold" rating in a report on Sunday, February 22nd. Two investment analysts have rated the stock with a Buy rating, two have given a Hold rating and two have issued a Sell rating to the company. Based on data from MarketBeat.com, Ambiq Micro currently has an average rating of "Hold" and a consensus target price of $40.00.

Insiders Place Their Bets

In other Ambiq Micro news, Director Joseph A. Tautges sold 7,800 shares of the stock in a transaction on Monday, January 26th. The stock was sold at an average price of $31.00, for a total transaction of $241,800.00. Following the transaction, the director owned 48,746 shares in the company, valued at $1,511,126. This trade represents a 13.79% decrease in their position. The transaction was disclosed in a filing with the Securities & Exchange Commission, which is available at this hyperlink. Also, CTO Scott Mclean Hanson sold 10,000 shares of the business's stock in a transaction that occurred on Monday, January 26th. The shares were sold at an average price of $31.00, for a total value of $310,000.00. Following the completion of the sale, the chief technology officer owned 122,818 shares of the company's stock, valued at approximately $3,807,358. This trade represents a 7.53% decrease in their ownership of the stock. The disclosure for this sale is available in the SEC filing. Over the last ninety days, insiders sold 18,611 shares of company stock worth $573,008.

Institutional Investors Weigh In On Ambiq Micro

Large investors have recently modified their holdings of the company. Atreides Management LP bought a new position in shares of Ambiq Micro during the 3rd quarter worth about $20,474,000. Alliancebernstein L.P. bought a new stake in Ambiq Micro during the 3rd quarter valued at $13,050,000. KADENSA CAPITAL Ltd acquired a new position in Ambiq Micro during the third quarter worth $11,818,000. Vanguard Group Inc. bought a new position in shares of Ambiq Micro in the third quarter valued at $9,210,000. Finally, Franklin Resources Inc. lifted its stake in shares of Ambiq Micro by 2,474.3% in the fourth quarter. Franklin Resources Inc. now owns 307,887 shares of the company's stock valued at $8,775,000 after buying an additional 295,927 shares in the last quarter.

Ambiq Micro Price Performance

Shares of NYSE AMBQ traded down $0.04 during mid-day trading on Friday, hitting $28.78. 172,187 shares of the stock traded hands, compared to its average volume of 396,355. Ambiq Micro has a twelve month low of $22.12 and a twelve month high of $51.76. The company has a market cap of $611.93 million and a PE ratio of -0.74. The firm has a 50 day simple moving average of $28.42 and a two-hundred day simple moving average of $29.28.

Ambiq Micro (NYSE:AMBQ - Get Free Report) last posted its earnings results on Thursday, March 5th. The company reported ($0.49) EPS for the quarter, beating the consensus estimate of ($0.61) by $0.12. The firm had revenue of $20.74 million during the quarter, compared to the consensus estimate of $19.00 million. Ambiq Micro had a negative return on equity of 351.35% and a negative net margin of 50.28%.Ambiq Micro has set its Q1 2026 guidance at -0.390--0.330 EPS.

About Ambiq Micro

Ambiq Micro NYSE: AMBQ is a semiconductor company specializing in the design and development of ultra-low-power microcontroller units (MCUs) and application-specific integrated circuits (ASICs). The company's core technology leverages sub-threshold voltage operation to dramatically reduce energy consumption, enabling extended battery life in a broad range of portable and always-on devices. Ambiq's products are particularly well suited for applications where power efficiency is critical, such as wearable electronics, IoT sensors, medical monitoring equipment, and industrial automation systems.

The company's flagship product family, the Apollo series of MCUs, offers multi-core architectures, integrated wireless connectivity options, and advanced security features.

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