$YYAI stock is down 34% today. Here's what we see in our data.

$YYAI stock has now fallen 34% today, according to our price data from Polygon. There has been approximately $1,141,897 of trading volume.

Here is what we see in our data on $YYAI (you can track the company live on Quiver's $YYAI stock page):

$YYAI Insider Trading Activity

$YYAI insiders have traded $YYAI stock on the open market 8 times in the past 6 months. Of those trades, 8 have been purchases and 0 have been sales.

Here’s a breakdown of recent trading of $YYAI stock by insiders over the last 6 months:

• HONGYU ZHOU has made 8 purchases buying 5,663,937 shares for an estimated $7,645,050 and 0 sales.

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

$YYAI Hedge Fund Activity

We have seen 14 institutional investors add shares of $YYAI stock to their portfolio, and 3 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

• VANGUARD GROUP INC added 315,659 shares (+15067.3%) to their portfolio in Q4 2025, for an estimated $246,245
• GEODE CAPITAL MANAGEMENT, LLC added 175,134 shares (+11738.2%) to their portfolio in Q4 2025, for an estimated $136,622
• UBS GROUP AG added 89,957 shares (+29.5%) to their portfolio in Q1 2026, for an estimated $75,186
• JANE STREET GROUP, LLC added 70,092 shares (+7286.1%) to their portfolio in Q4 2025, for an estimated $54,678
• FEDERATION DES CAISSES DESJARDINS DU QUEBEC added 21,150 shares (+3411.3%) to their portfolio in Q1 2026, for an estimated $17,677
• TWO SIGMA SECURITIES, LLC added 17,514 shares (+inf%) to their portfolio in Q4 2025, for an estimated $13,662
• POWELL INVESTMENT ADVISORS, LLC added 14,100 shares (+inf%) to their portfolio in Q1 2026, for an estimated $11,784

To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

You can track data on $YYAI on Quiver Quantitative.

This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.