AXT INC (AXTI) Stock Institutional Trading Activity


AXT INC (AXTI) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Polen Capital Management, and Ariel Appreciation Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2018Ariel Appreciation FundBuy16,833263,723$1,912
Q1 2018Renaissance Technologies LLCSell-190,500465,000$3,371
Q4 2017Ariel Appreciation FundSell-143,623246,890$2,148
Q4 2017Renaissance Technologies LLCSell-231,300655,500$5,703
Q3 2017Ariel Appreciation FundSell-251,805390,513$3,573
Q3 2017Renaissance Technologies LLCSell-15,300886,800$8,114
Q2 2017Ariel Appreciation FundSell-190,409642,318$4,079
Q2 2017Renaissance Technologies LLCBuy66,240902,100$5,728
Q1 2017Ariel Appreciation FundSell-511,675832,727$4,830
Q1 2017Renaissance Technologies LLCSell-82,974835,860$4,848
Q4 2016Ariel Appreciation FundSell-687,4731,344,402$6,453
Q4 2016Renaissance Technologies LLCBuy6,738918,834$4,410
Q3 2016Ariel Appreciation FundSell-408,6892,031,875$10,545
Q3 2016Renaissance Technologies LLCBuy111,471912,096$4,734
Q2 2016Ariel Appreciation FundSell-802,1242,440,564$7,785
Q2 2016Renaissance Technologies LLCBuy318,825800,625$2,554
Q1 2016Ariel Appreciation FundSell-227,4523,242,688$8,009
Q1 2016Renaissance Technologies LLCBuy23,800481,800$1,190
Q4 2015Ariel Appreciation FundSell-262,2503,470,140$8,606
Q4 2015Renaissance Technologies LLCBuy19,800458,000$1,136
Q3 2015Ariel Appreciation FundBuy827,3193,732,390$7,166
Q3 2015Renaissance Technologies LLCBuy11,576438,200$841
Q2 2015Ariel Appreciation FundBuy199,5512,905,071$7,321
Q2 2015Renaissance Technologies LLCSell-15,086426,624$1,075
Q1 2015Ariel Appreciation FundBuy2,257,1052,705,520$7,278
Q1 2015Renaissance Technologies LLCSell-9,162441,710$1,188
Q4 2014Ariel Appreciation FundBuy448,415448,415$1,256
Q4 2014Renaissance Technologies LLCBuy244,672450,872$1,262
Q3 2014Renaissance Technologies LLCBuy78,691206,200$503
Q2 2014Renaissance Technologies LLCBuy49,809127,509$273

Frequently asked questions about AXTI activity

  • Which institutional owners are buying AXTI?

    Institutional owners buying AXTI include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in AXTI activity?

    "Buy" means an investor increased their reported position in AXTI compared to the prior reporting period. This reflects growing exposure to AXT INC (AXTI) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in AXTI increasing?

    Institutional interest in AXTI can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.