Tech-Stock Prospector

Tech-Stock Prospector

TSP Weekly Tech Stock Update—Sep 13, 2025

This Week: Microsoft shares start to rebound, GitLab rallies, Rubrik dips despite strong FQ2 results, Broadcom hits new all-time high, Alphabet's top catalysts, Guggenheim bullish on Atlassian & more.

Tech-Stock Prospector
Sep 13, 2025
∙ Paid

Hello from Rob…

—In Q2, some big investors made notable purchases of GitLab (GTLB, $50.30) when the stock traded between a low of $37.90 (April 4) and a high of $54.08 (May 14):

  • Activist investor Eminence Capital became the #3 holder after buying 3.720 million shares, increasing its position by 149% to 6.218 million shares.

  • Activist investor HMI Capital added 1.430 million shares, boosting its stake by 32% to 5.858 million shares, making it the #4 holder.

  • Champlain Investment Partners, now the #5 holder, increased its position by 251% to 4.512 million shares, purchasing 3.227 million shares.

  • Atreides Management (run by the former portfolio manager of Fidelity OTC Portfolio fund) upped its stake by 867% via the purchase of 3.531 million shares. The firm now owns 3.938 million shares, making it the #7 holder.

Atreides was also a big Q2 buyer of Pure Storage (PSTG, $82.30), which I wrote about back in mid-August. Pure Storage shares in late August jumped 33% in one week following the company’s FQ2 (July) earnings report.

*Inside This Issue: Nutanix Shares Gain On Index Addition

—Paid subscribers will receive the October 2025 PDF of Tech-Stock Prospector (TSP #284) via email on Tuesday, October 7.

—Paid subscribers have access to the TSP Market Overview and TSP Portfolio Updates sections inside this issue.

This post is for paid subscribers

Already a paid subscriber? Sign in
© 2025 Tech-Stock Prospector
Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture