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Amplitude AMPL

US equityMarket cap rank #2833Software - Application
$14.88 +$0.36 (+2.48%)
Pre-market · Oct 6, 4:10 am ET · After hours $14.95 +0.47%
Open$14.46
Prev close$14.52
Day range$14.46 – $14.92
Volume1.91M
Market cap$1.86B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership75.8%-1.42 pts vs. prior quarter
Institutions holding246-1 vs. prior quarter
Insider trades (recent)16 buys / 32 sellsNet selling
Short interest5.20% of floatDays to cover 4.0 · as of 15 Sep 2026
Short-sale volume share20.7%5-day average of daily volume

Short-sale volume as % of daily volume

14%20%25%30%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$3.35M (7 inflow days, 13 outflow days).

The five largest holders on file together own 36.0% of shares outstanding.

Largest holders

  • Wellington Management Group8.87%
  • Sequoia Capital Operations8.18%
  • BlackRock8.04%
  • Curtis Liu6.05%
  • Vanguard Portfolio Management, LLC4.87%
  • FMR4.77%
  • Spenser Skates4.68%
  • GIC Private Limited3.98%

By investor type

  • Mutual Fund49.55%
  • Individual/Insider13.66%
  • Hedge Fund11.75%
  • VC/PE Fund8.20%
  • Sovereign Wealth Fund3.99%
  • Public Company1.39%
  • Government Pension Fund0.47%
  • Private Company0.34%

Reported short interest has fallen from 6.04% to 5.20% 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 6,494,072 5.2% 4.0
31 Aug 2026 7,435,398 6.0% 4.4
14 Aug 2026 7,756,543 6.2% 2.8
31 Jul 2026 7,681,101 5.8% 4.4
15 Jul 2026 8,696,566 6.6% 3.1
30 Jun 2026 8,006,545 6.0% 3.6

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