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Livermore
ZHEN

Fastly, Inc.

FSLY
Exchange
Nasdaq
Industry
Services-Prepackaged Software
SEC CIK
0001517413

In the last 90 days, Fastly, Inc. insiders filed 0 open-market purchases and 29 sales; 284 institutions reported holding it in 13F filings for Q2 2026, worth $2.73B in total; no superinvestor holds it.

Q4 2025 vs. Q3 2025

How the institutions holding Fastly, Inc. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of FSLY: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders2396252+19
Shares105.2M486.6K115.3M+10.6M (+10.1%)
Value$899.6M$4.16M$1.17B+$278.4M (+31.1%)

6 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (57)

Institutions that held Fastly, Inc. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to FSLY in Q4 2025
InstitutionSharesValue% of portfolio
Driehaus Capital Management LLC1,384,967$14.1M0.10%
T. Rowe Price Investment Management, Inc.1,145,012$11.7M0.01%
Oberweis Asset Management Inc689,800$7.02M0.26%
Jump Financial, LLC320,684$3.26M0.04%
Proem Advisors LLC270,000$2.75M0.93%
DeepCurrents Investment Group LLC256,500$2.61M0.10%
G2 Investment Partners Management LLC229,900$2.34M0.56%
Edgestream Partners, L.P.158,479$1.61M0.05%
PEAK6 LLC91,934$935.9K0.03%
Boothbay Fund Management, LLC86,987$885.5K0.02%
Dark Forest Capital Management LP71,532$728.2K0.03%
Archon Capital Management LLC70,000$712.6K0.41%
Massar Capital Management, LP63,090$642.3K0.13%
Dynamic Technology Lab Private Ltd55,355$564.0K0.13%
Gsa Capital Partners LLP50,391$513.0K0.04%
Fuller & Thaler Asset Management, Inc.43,142$439.2K0.00%
Brevan Howard Capital Management LP42,604$433.7K0.01%
XTX Topco Ltd39,541$402.5K0.01%
Graham Capital Management, L.P.39,335$400.4K0.01%
Woodline Partners LP37,216$378.9K0.00%
Ares Systematic Credit Ltd33,911$345.2K0.28%
Winton Group Ltd29,700$302.3K0.01%
STRS Ohio24,600$250.4K0.00%
Quantbot Technologies LP23,160$235.8K0.01%
Franklin Resources Inc22,507$229.0K0.00%
Centiva Capital, LP21,969$223.6K0.01%
Scotia Capital Inc.19,558$199.1K0.00%
Virtus ETF Advisers LLC17,200$175.1K0.08%
Skaana Management L.P.15,500$157.8K0.09%
Jupiter Asset Management Ltd12,570$128.0K0.00%
Magnetar Financial LLC12,039$122.6K0.00%
Quotient Wealth Partners, LLC11,576$117.8K0.00%
Sumitomo Mitsui DS Asset Management Company, Ltd11,492$117.0K0.00%
Kemnay Advisory Services Inc.11,252$114.5K0.02%
Twelve Points Wealth Management LLC12,243$114.0K0.03%
JustInvest LLC10,670$108.6K0.00%
Advisors Asset Management, Inc.8,175$83.2K0.00%
C M Bidwell & Associates Ltd5,263$53.6K0.03%
Caitong International Asset Management Co., Ltd4,010$40.8K0.01%
Schroder Investment Management Group1,003$10.2K0.00%
Eastern Bank815$8.30K0.00%
MH & Associates Securities Management Corp570$5.80K0.00%
Rockefeller Capital Management L.P.487$4.96K0.00%
Align Financial, LLC4,072$4.07K0.00%
Navalign, LLC341$3.47K0.00%
Flagship Harbor Advisors, LLC309$3.15K0.00%
MCF Advisors LLC300$3.05K0.00%
Hilton Head Capital Partners, LLC283$2.88K0.00%
Aster Capital Management (DIFC) Ltd166$1.69K0.00%
Smartleaf Asset Management LLC147$1.49K0.00%
Bayforest Capital Ltd95$9670.00%
McMillan Office, Inc.89$9060.00%
Torren Management, LLC52$5290.00%
Vision Retirement, LLC50$5090.00%
Bare Financial Services, Inc47$4780.00%
Curio Wealth, LLC42$4430.00%
Dunhill Financial, LLC2$240.00%

Sold out (38)

Institutions that held Fastly, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of FSLY in Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Divisadero Street Capital Management, LP2,476,487$21.2M
Voloridge Investment Management, LLC678,274$5.80M
GMT Capital Corp598,800$5.12M
Caption Management, LLC406,551$3.48M
Hussman Strategic Advisors, Inc.210,000$1.80M
State of Wisconsin Investment Board199,475$1.71M
Capital Fund Management S.A.147,860$1.26M
Universal- Beteiligungs- und Servicegesellschaft mbH116,617$997.1K
Picton Mahoney Asset Management91,273$781.0K
Campbell & CO Investment Adviser LLC39,515$337.9K
Entropy Technologies, LP39,500$337.7K
Fox Run Management, L.L.C.36,620$313.1K
Sherbrooke Park Advisers LLC28,209$241.2K
Numerai GP LLC24,539$209.8K
Semanteon Capital Management, LP24,393$208.6K
Blueshift Asset Management, LLC21,769$186.1K
Teacher Retirement System of Texas17,981$153.7K
Balyasny Asset Management LLC16,833$143.9K
R Squared Ltd15,706$134.3K
Polymer Capital Management (US) LLC15,637$133.7K
Axq Capital, LP14,941$127.7K
Midwest Financial Group LLC12,875$110.1K
Parallax Volatility Advisers, L.P.12,095$103.4K
Cetera Investment Advisers11,299$96.6K
Wealthspire Advisors, LLC1,927$16.5K
Banque Cantonale Vaudoise791$7.00K
GPS Wealth Strategies Group, LLC650$5.56K
Whittier Trust Co433$3.82K
GWM Advisors LLC350$2.99K
HM Payson & Co325$2.78K
Robbins Farley LLC120$1.03K
Raffa Wealth Management, LLC73$624
Advisory Services Network, LLC62$530
Tanglewood Legacy Advisors, LLC50$428
West Branch Capital LLC26$202
Grey Fox Wealth Advisors, LLC10$86
Groupe la Francaise10$74
FNY Investment Advisers, LLC14$0

Not filed for Q4 2025 yet (6)

Institutions that held Fastly, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding FSLY in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Cubist Systematic Strategies, LLC411,801$3.52M
Wolverine Trading, LLC34,515$299.2K
Corton Capital Inc.15,169$129.7K
CIBC Bancorp USA Inc.14,609$124.9K
Point72 Asia (Singapore) Pte. Ltd.10,483$89.6K
Guerra Advisors Inc20$171