$OPEN stock fell 6% this week. Here's what we see in our data.

$OPEN stock fell 6% this week, according to our price data from Polygon.

It has been the 44th most-searched ticker on Quiver Quantitative over the last week, out of 50 total tickers searched.

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

$OPEN Insider Trading Activity

$OPEN insiders have traded $OPEN stock on the open market 4 times in the past 6 months. Of those trades, 0 have been purchases and 4 have been sales.

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

• CHRISTINA SCHWARTZ (Chief Financial Officer) sold 74,248 shares for an estimated $320,632
• DAVID C BENSON sold 40,000 shares for an estimated $193,364
• GIANG NGUYEN (Chief Operating Officer) has made 0 purchases and 2 sales selling 14,457 shares for an estimated $67,311.

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.

$OPEN Hedge Fund Activity

We have seen 161 institutional investors add shares of $OPEN stock to their portfolio, and 142 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

• MORGAN STANLEY added 51,188,766 shares (+99.2%) to their portfolio in Q1 2026, for an estimated $239,563,424
• RENAISSANCE TECHNOLOGIES LLC removed 27,519,500 shares (-70.0%) from their portfolio in Q1 2026, for an estimated $128,791,259
• QUBE RESEARCH & TECHNOLOGIES LTD added 8,859,070 shares (+682.9%) to their portfolio in Q1 2026, for an estimated $41,460,447
• MILLENNIUM MANAGEMENT LLC added 5,977,711 shares (+123.0%) to their portfolio in Q1 2026, for an estimated $27,975,687
• LENNAR CORP /NEW/ removed 5,251,136 shares (-28.0%) from their portfolio in Q1 2026, for an estimated $24,575,316
• DIMENSIONAL FUND ADVISORS LP added 4,461,757 shares (+96.7%) to their portfolio in Q1 2026, for an estimated $20,881,022
• BNP PARIBAS FINANCIAL MARKETS removed 4,288,378 shares (-69.6%) from their portfolio in Q1 2026, for an estimated $20,069,609

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 $OPEN 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.