Gilder Gagnon Howe & Co Llc Q2 2026 Portfolio Activity: Strategic Shifts in Tech, Communication Services
Insights into holdings changes by investment firm Gilder Gagnon Howe & Co Llc during the second quarter of 2026.

As reported for Gilder Gagnon Howe & Co Llc, portfolio changes were observed during the period ending June 30, 2026. The firm's total holdings saw adjustments across various sectors.
Overall Portfolio Changes
The investment strategy for this quarter appears to have involved both buying and selling activities. There is evidence of large purchases (has_large_buys: true) and significant sales (has_large_sells: true). The portfolio's holdings count decreased slightly from 369 to 236, while the top five holdings accounted for approximately 19.09% of the total portfolio value.
Focus on Technology Sector
The Technology sector, a core area for this investor, experienced notable shifts. While some tech stocks like ENPH and ACMR saw substantial increases in their stock values within the portfolio (ENPH: +62.08% allocation change, ACMR: +794.18% value increase), others like NVDA and MU showed significant reductions in portfolio weight despite being top holdings.
Significant Purchases This Quarter
The investor demonstrated strong buying interest, particularly acquiring positions in:
- ENPHASE ENERGY INC (ENPH) - A notable increase of over one million shares was observed.
- ACM RESH INC (ACMR) - This stock saw a massive share increase, boosting its portfolio allocation significantly.
Their buying activity also extended to other sectors:
- ROBLOX CORP (RBLX) - Increased portfolio allocation in Communication Services.
- UNIVERSAL TECHNICAL INST INC (UTI) - A considerable increase in shares was noted, particularly for this Consumer Defensive stock.
Strategic Sales and Exits
The investor also showed a clear disposition to sell certain holdings:
- ARCUTIS BIOTHERAPEUTICS INC (ARQT) - A substantial reduction in shares was recorded.
This selling activity impacted various sectors:
- Healthcare: Significant reductions were seen in ARQT, BFLY, and CTMX. The firm sold out of GLW (a large sell) but this stock is not listed among the changed_holdings data provided.
- Communication Services: Reduced exposure to NFLX and RBLX was noted.
- Consumer Cyclical: Shares were sold from ARQT, NET, PWR, REAL, TSLA, and TDUP. The large sell of PLTR (noted in the data but not listed here) would have been a significant exit if it belonged to this sector.
- Industrials: Sold out of RTX (a large sell), though this stock is also not detailed in the provided changed_holdings list.
Portfolio Allocation Insights
The investor's allocation breakdown as of June 30, 2026, shows a diversified portfolio with Technology leading at approximately 34.79%, followed by Communication Services (15.41%), Consumer Cyclical (12.8%), Industrials (10.34%), and Healthcare (8.24%). The remaining allocation of 10.26% is in Unknown sectors.
No Activity Disclosed
In some cases, specific activities are not disclosed for certain stocks or sectors:
- Basic Materials: No change activity reported for this sector during the period.
- Financial Services: No change activity reported for this sector during the period.
- Energy: No change activity reported for this sector during the period.
- Consumer Defensive: While UTI was bought, no other changes were disclosed in this category beyond what is listed.