L3VLUP
ProSign in

FSLY in the 13F filings

Fastly Inc · CUSIP 31188V100

Sector · Software and IT servicesTheme · Cloud and enterprise software· L3VLUP-definedTheme · Prepackaged software
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
23
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 4 listed it in both
Shares listed
43,742,026
combined, among listed positions
Reported value
$805m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 16 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +8,270,250.

Managers listing FSLY in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

23 of 23 holders

ActionFiling
Fidelity (FMR LLC)11,892,230$218munder 0.1%Added+3,255,44113 Aug 2026 (the filing on sec.gov)
Capital World Investors8,228,136$151munder 0.1%Added+4,473,59912 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.6,616,726$121m0.06%Added+3,992,66914 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP6,062,511$111m0.08%Added+448,26414 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC2,599,187$48munder 0.1%Added+58,52714 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc2,289,082$42munder 0.1%Added+180,30614 Aug 2026 (the filing on sec.gov)
Millennium Management LLC1,515,181$28munder 0.1%Added+100,56314 Aug 2026 (the filing on sec.gov)
MFS Investment Management716,933$13munder 0.1%Newnew3 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP642,323$12munder 0.1%Added+554,25314 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC596,285$11munder 0.1%Added+135,9712 Sep 2026 (the filing on sec.gov)
Wellington Management Group LLP473,659$8.7munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC459,283$8.4munder 0.1%Trimmed-366,37714 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC336,786$6.2munder 0.1%Added+21,63914 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC324,200$6.0munder 0.1%Trimmed-194,15413 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP198,248$5.8munder 0.1%Added+43,31214 Aug 2026 (the filing on sec.gov)
Invesco Ltd307,576$5.6munder 0.1%Trimmed-583,68614 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp164,334$3.0munder 0.1%Trimmed-872,14514 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC87,647$1.6munder 0.1%Added+70,20613 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd67,050$1.2munder 0.1%Held014 Aug 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC66,945$1.2munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP52,649$967kunder 0.1%Newnew12 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC23,018$423kunder 0.1%Trimmed-89,4533 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP22,037$405kunder 0.1%Trimmed-17,60814 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (4)

Exited (7)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
2 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

0358102020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
FSLY by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20192$14mn.a.n.a.
Q3 20191$9.6mn.a.n.a.
Q4 20192$40mn.a.n.a.
Q1 20204$54mn.a.n.a.
Q2 20206$611mn.a.n.a.
Q3 20207$722mn.a.n.a.
Q4 20208$591mn.a.n.a.
Q1 20215$384mn.a.n.a.
Q2 20215$276mn.a.n.a.
Q3 20219$109mn.a.n.a.
Q4 20217$165mn.a.n.a.
Q1 20227$116mn.a.n.a.
Q2 20227$77mn.a.n.a.
Q3 20226$56mn.a.n.a.
Q4 20224$66mn.a.n.a.
Q1 20238$119mn.a.n.a.
Q2 20235$94mn.a.n.a.
Q3 20236$174mn.a.n.a.
Q4 20236$146m24
Q1 20242$16m12
Q2 20242$16m20
Q3 20242$16m11
Q4 20243$25m30
Q1 20254$22m40
Q2 20253$11m21
Q3 20252$8.1m02
Q4 20252$26m1710
Q1 20267$486m1911
Q2 20263$384m1613

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

FSLY and GOOGL →FSLY and AMZN →FSLY and MSFT →Choose a stock to compare with FSLY →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own FSLY, latest filings →Back to the 13F Explorer →