Fastly, Inc. (FSLY) Ownership
FSLY ownership summary
as of October 18, 2026- Institutions
- 95.1% of shares outstanding
- Insiders
- 4.53% of shares outstanding
- Shares outstanding
- 159.3M
- Float
- 152.5M shares available to trade
- Short interest
- 15.46% 21.2M shares short
- Days to cover
- 2.66 short interest down 1.8% vs prior month
- Institutions 95.08%
- Insiders 4.53%
- Other investors 0.39%
FSLY top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 9.56% | 15.2M | $342.1M | +2.8M (+22.4%) | June 30, 2026 |
| 2 | FMR Inc | 7.47% | 11.9M | $267.2M | +3.3M (+37.7%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 6.16% | 9.8M | $220.5M | −1.2M (−10.9%) | June 30, 2026 |
| 4 | Capital World Investors | 5.17% | 8.2M | $184.9M | +4.5M (+119.2%) | June 30, 2026 |
| 5 | First Trust Advisors L.P. | 4.82% | 7.7M | $172.6M | +649,053 (+9.2%) | June 30, 2026 |
| 6 | D. E. Shaw & Co LP | 4.15% | 6.6M | $148.7M | +4.0M (+152.2%) | June 30, 2026 |
| 7 | Vanguard Capital Management, LLC | 3.96% | 6.3M | $141.9M | +317,513 (+5.3%) | June 30, 2026 |
| 8 | Two Sigma Investments LLC | 3.81% | 6.1M | $136.2M | +448,264 (+8.0%) | June 30, 2026 |
| 9 | Penserra Capital Management, LLC | 2.90% | 4.6M | $103.9M | +1.1M (+30.6%) | June 30, 2026 |
| 10 | Legal & General Group PLC | 2.74% | 4.4M | $98.1M | −3.7M (−45.8%) | June 30, 2026 |
| 11 | Geode Capital Management, LLC | 2.45% | 3.9M | $87.9M | +332,551 (+9.3%) | June 30, 2026 |
| 12 | State Street Corp | 2.22% | 3.5M | $79.5M | +282,108 (+8.7%) | June 30, 2026 |
| 13 | Alyeska Investment Group, L.P. | 1.99% | 3.2M | $71.1M | +3.2M (0.0%) | June 30, 2026 |
| 14 | Dimensional Fund Advisors, Inc. | 1.92% | 3.1M | $68.9M | +323,249 (+11.8%) | June 30, 2026 |
| 15 | Jane Street Group LLC | 1.63% | 2.6M | $58.4M | +58,527 (+2.3%) | June 30, 2026 |
| 16 | Driehaus Capital Management LLC | 1.60% | 2.5M | $57.2M | +1.7M (+203.5%) | June 30, 2026 |
| 17 | The Goldman Sachs Group Inc | 1.56% | 2.5M | $55.8M | +1.3M (+111.0%) | June 30, 2026 |
| 18 | VOYA INVESTMENT MANAGEMENT LLC | 1.53% | 2.4M | $54.8M | −1.5M (−38.0%) | June 30, 2026 |
| 19 | T. Rowe Price Associates, Inc. | 1.44% | 2.3M | $51.4M | +180,306 (+8.6%) | June 30, 2026 |
| 20 | Fuller & Thaler Asset Management Inc | 1.37% | 2.2M | $49.2M | +29,534 (+1.4%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 17 holders added 24.4M shares and 3 cut 6.4M.
FSLY top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | L&G Cyber Security ETF | 5.53% | 8.8M | $197.9M | +7,697 (+0.1%) | September 30, 2026 |
| 2 | American Funds SMALLCAP World A | 5.03% | 8.0M | $179.9M | +4.3M (+115.0%) | June 30, 2026 |
| 3 | Amplify Cybersecurity ETF | 2.94% | 4.7M | $105.1M | +25,380 (+0.5%) | September 30, 2026 |
| 4 | Vanguard MStar Total Stk Mkt Idx Invest | 2.81% | 4.5M | $100.4M | −30,789 (−0.7%) | August 31, 2026 |
| 5 | iShares Russell 2000 ETF | 2.50% | 4.0M | $89.6M | −45,952 (−1.1%) | September 30, 2026 |
| 6 | Fidelity Select Software & IT Svcs Port | 2.49% | 4.0M | $89.3M | −7,700 (−0.2%) | August 31, 2026 |
| 7 | First Trust NASDAQ Cybersecurity ETF | 2.24% | 3.6M | $80.1M | — | September 30, 2026 |
| 8 | Vanguard Information Technology ETF | 2.17% | 3.5M | $77.8M | −5,677 (−0.2%) | August 31, 2026 |
| 9 | Vanguard Small Cap Index | 2.03% | 3.2M | $72.8M | +541 (+0.0%) | August 31, 2026 |
| 10 | First Trust Cloud Computing ETF | 1.59% | 2.5M | $57.0M | −6,249 (−0.2%) | September 30, 2026 |
| 11 | Fidelity Growth Company Fund | 1.18% | 1.9M | $42.3M | +81,200 (+4.5%) | August 31, 2026 |
| 12 | Vanguard MStar Small Cap Growth Indx Inv | 1.17% | 1.9M | $41.9M | −5,618 (−0.3%) | August 31, 2026 |
| 13 | Fidelity Small Cap Index | 1.05% | 1.7M | $37.6M | +14,214 (+0.9%) | July 31, 2026 |
| 14 | iShares U.S. Digital Infras & RE ETF | 1.01% | 1.6M | $36.3M | — | September 30, 2026 |
| 15 | iShares Russell 2000 Growth ETF | 0.90% | 1.4M | $32.3M | −1,818 (−0.1%) | September 30, 2026 |
| 16 | FullerThaler Behavioral Sm-Cp Gr R6 | 0.86% | 1.4M | $30.7M | +1.4M (0.0%) | March 31, 2026 |
| 17 | Fidelity Small Cap Growth | 0.69% | 1.1M | $24.9M | — | July 31, 2026 |
| 18 | Fidelity Capital Appreciation | 0.68% | 1.1M | $24.5M | +1.1M (0.0%) | August 31, 2026 |
| 19 | Allianz Cyber Security WT9 USD Acc | 0.57% | 904K | $20.3M | +431,341 (+91.3%) | August 31, 2026 |
| 20 | Vanguard Russell 2000 ETF | 0.55% | 881K | $19.8M | +20,841 (+2.4%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
FSLY insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-17 | Charles Lacey Compton III | Sell | $24.57 | 7,059 | $173,440 |
| 2026-04-16 | Charles Lacey Compton III | Sell | $24.33 | 22,474 | $546,792 |
| 2026-03-18 | Scott R Lovett | Sell | $26.45 | 41,682 | $1.1M |
| 2026-03-17 | Scott R Lovett | Sell | $22.28 | 34,953 | $778,753 |
| 2026-03-10 | Artur Bergman | Sell | $22.79 | 265,000 | $6.0M |
| 2026-03-09 | Artur Bergman | Sell | $21.07 | 40,000 | $842,800 |
| 2026-03-05 | Artur Bergman | Sell | $20.69 | 31,079 | $643,025 |
| 2026-03-05 | Charles Lacey Compton III | Sell | $20.69 | 36,694 | $759,199 |
| 2026-03-04 | Scott R Lovett | Sell | $21.06 | 73,715 | $1.6M |
| 2026-03-04 | Charles Lacey Compton III | Sell | $20.94 | 73,206 | $1.5M |
| 2026-03-04 | Artur Bergman | Sell | $21.06 | 24,532 | $516,644 |
| 2026-03-02 | Artur Bergman | Sell | $20.56 | 275,234 | $5.7M |
| 2026-02-27 | Artur Bergman | Sell | $17.50 | 869 | $15,208 |
| 2026-02-23 | Artur Bergman | Sell | $17.08 | 40,000 | $683,200 |
| 2026-02-19 | Artur Bergman | Sell | $18.89 | 39,881 | $753,352 |
| 2026-02-19 | Artur Bergman | Sell | $20.10 | 34,576 | $694,978 |
| 2026-02-19 | Charles Lacey Compton III | Sell | $18.88 | 14,797 | $279,367 |
| 2026-02-18 | Artur Bergman | Sell | $17.53 | 18,338 | $321,465 |
| 2026-02-18 | Charles Lacey Compton III | Sell | $17.53 | 12,916 | $226,417 |
| 2026-02-18 | Scott R Lovett | Sell | $17.53 | 6,573 | $115,225 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
FSLY shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns FSLY
Institutional investors own 95.1% of Fastly's shares and insiders 4.53%. The largest holder is BlackRock Inc with 9.56% of the shares (15.2M), as of June 30, 2026. Among the top 20 institutions, 17 added shares and 3 reduced their stake in the latest filings. Short interest is 15.46% of the float, or 2.66 days of average trading volume. The share count rose 553.6% since 2017.
Related: FSLY analyst forecast, FSLY key metrics. See the FSLY stock overview for the latest quote and news.
FSLY ownership FAQ
Who owns the most Fastly stock?
The largest shareholders of Fastly are BlackRock Inc (9.56%), FMR Inc (7.47%), Vanguard Portfolio Management, LLC (6.16%), Capital World Investors (5.17%), First Trust Advisors L.P. (4.82%).
What percentage of Fastly is owned by institutions?
Institutions hold 95.1% of Fastly's shares outstanding; insiders hold 4.53%.
Which funds own Fastly?
The largest fund holders of Fastly are L&G Cyber Security ETF (5.53%), American Funds SMALLCAP World A (5.03%), Amplify Cybersecurity ETF (2.94%), Vanguard MStar Total Stk Mkt Idx Invest (2.81%), iShares Russell 2000 ETF (2.50%).
What is Fastly's short interest?
21.2M shares of Fastly were sold short, 15.46% of the float; at the average daily volume it would take 2.66 days to cover.
Are insiders buying or selling Fastly?
Of the latest 20 reported insider transactions in Fastly (since February 18, 2026), 0 were purchases and 20 were sales.
How many shares of Fastly are outstanding?
Fastly has 159.3M shares outstanding, of which 152.5M are in the public float.