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Enphase Energy ENPH

US equityMarket cap rank #2198
$33.45 −$0.02 (-0.06%)
Market closed · Oct 5, 11:10 pm ET · Last extended-hours $33.37 -0.24%
Open$33.23
Prev close$33.47
Day range$31.98 – $33.56
Volume3.75M
Market cap$4.42B
P/E (TTM)33.1
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership96.1%-0.24 pts vs. prior quarter
Institutions holding665-3 vs. prior quarter
Insider trades (recent)30 buys / 20 sellsNet buying
Short interest18.07% of floatDays to cover 5.8 · as of 15 Sep 2026
Short-sale volume share19.2%5-day average of daily volume

Short-sale volume as % of daily volume

14%19%23%28%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$11.79M (6 inflow days, 14 outflow days).

The five largest holders on file together own 36.7% of shares outstanding.

Largest holders

  • BlackRock17.75%
  • Vanguard Portfolio Management, LLC6.86%
  • Vanguard Capital Management, LLC4.96%
  • State Street Global Advisors3.59%
  • Two Sigma Investments, LP3.52%
  • Invesco Capital Management LLC2.67%
  • Gilder Gagnon Howe & Co. LLC2.63%
  • Slate Path Capital LP1.96%

By investor type

  • Mutual Fund70.83%
  • Hedge Fund13.53%
  • Public Company6.69%
  • Individual/Insider2.95%
  • Private Company2.24%
  • Government Pension Fund1.21%
  • Sovereign Wealth Fund1.10%
  • Insurance Company0.18%

Reported short interest has risen from 17.85% to 18.07% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 23,876,212 18.1% 5.8
31 Aug 2026 23,375,084 17.7% 6.1
14 Aug 2026 21,559,258 16.3% 5.4
31 Jul 2026 23,034,764 17.4% 4.6
15 Jul 2026 22,918,331 17.4% 5.1
30 Jun 2026 23,529,439 17.9% 2.9

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