Amplitude, Inc.
Amplitude, Inc. (AMPL) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AMPL · as of Mar 31, 2025
Ownership Breakdown
205
Institutional Holders
▲ 53 vs Q4
$737.51M
Total Inst. Value
▼ $2.09M vs Q4
132.87M
Shares Outstanding
freeFloat 72.54%
72.31M
13F Shares Held
▲ 2.21M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
AMPL largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC services-prepackaged software | 9.17M | 7.07% | 7.07% | $93.44B | May 9, 2025 | ▼ 20.1K |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. services-prepackaged software | 9.09M | 7.01% | 7.01% | $92.64B | May 14, 2025 | ▲ 94.8K |
FMR LLC services-prepackaged software | 7.31M | 5.63% | 5.63% | $74.47B | May 12, 2025 | ▼ 1.08M |
BLACKROCK, INC. services-prepackaged software | 6.49M | 5.00% | 5.00% | $66.14B | May 2, 2025 | ▲ 267.4K |
BATTERY MANAGEMENT CORP. services-prepackaged software | 4.45M | 3.43% | 3.43% | $45.36B | May 15, 2025 | ▼ 3.00M |
SUNRIVER MANAGEMENT LLC services-prepackaged software | 3.85M | 2.97% | 2.97% | $39.24B | May 14, 2025 | ▲ 78.1K |
SC US (TTGP), LTD. services-prepackaged software | 2.80M | 2.16% | 2.16% | $28.52B | May 14, 2025 | — held |
STATE STREET CORP services-prepackaged software | 2.06M | 1.59% | 1.59% | $21.03B | May 15, 2025 | ▲ 26.8K |
GEODE CAPITAL MANAGEMENT, LLC services-prepackaged software | 2.01M | 1.55% | 1.55% | $20.49B | May 13, 2025 | ▲ 54.6K |
BAILLIE GIFFORD & CO services-prepackaged software | 1.99M | 1.54% | 1.54% | $20.29B | May 7, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
25
Increased
+4.14M shares8
New Positions
first time holders13
Decreased
−5.38M shares0
Sold Out
fully exitedNet shares change (top 50)
1.24M
+4.14M / −5.38M
Net new holders
+20
8 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
AMPL insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
7
Buy transactions
1
Sell transactions
7.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Liu Curtis Chief Technology Officer | May 15, 2026 | Tax Withhold | 40,279 | $6.06 | $244.1K | 1.03M | Form 4 ↗ |
Crook Nathaniel Glenn Chief Commercial Officer | May 15, 2026 | Tax Withhold | 101,292 | $6.06 | $613.8K | 2.03M | Form 4 ↗ |
Casey Andrew Chief Financial Officer | May 15, 2026 | Tax Withhold | 64,872 | $6.06 | $393.1K | 1.44M | Form 4 ↗ |
Skates Spenser CEO and President | May 15, 2026 | Tax Withhold | 39,562 | $6.06 | $239.7K | 1.28M | Form 4 ↗ |
Liu Curtis Chief Technology Officer | May 4, 2026 | Sale | 17,586 | $8.12 | $142.9K | 1.07M | Form 4 ↗ |
Skates Spenser CEO and President | Apr 21, 2026 | Award | 1,323,119 | — | — | 1.32M | Form 4 ↗ |
Liu Curtis Chief Technology Officer | Apr 15, 2026 | Award | 417,827 | — | — | 1.08M | Form 4 ↗ |
Crook Nathaniel Glenn Chief Commercial Officer | Apr 15, 2026 | Award | 974,930 | — | — | 2.13M | Form 4 ↗ |
Crook Nathaniel Glenn Chief Commercial Officer | Apr 15, 2026 | Award | 278,551 | — | — | 1.16M | Form 4 ↗ |
Casey Andrew Chief Financial Officer | Apr 15, 2026 | Award | 431,754 | — | — | 1.50M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Amplitude, Inc. (AMPL) is primarily owned by institutional investors, who hold approximately 54.4% of total shares outstanding. Company insiders own approximately 27.46%, while retail and public investors account for the remaining 18.11%.
The largest institutional shareholder of Amplitude, Inc. is VANGUARD GROUP INC, holding approximately 9.17 million shares — equal to 7.07% of outstanding shares — as of March 31, 2025.
A total of 205 institutional investors currently hold AMPL stock, with a combined institutional value of approximately $737,506,327 as of the most recent 13F filing period.
Frequently asked questions
AMPL ownershipAmplitude, Inc. (AMPL) is primarily owned by institutional investors, who hold approximately 54.4% of shares. The largest shareholder is VANGUARD GROUP INC with a 7.07% stake. Company insiders hold 27.46%. Data sourced from SEC Form 13F as of March 31, 2025.