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AMPL in the 13F filings

Amplitude · CUSIP 03213A104

Sector · Software and IT servicesTheme · Cloud and enterprise software· L3VLUP-definedTheme · Prepackaged software
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
18 May 2026
latest of these filings; the earliest 8 May 2026
Managers listing it
24
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 3 listed it in both
Shares listed
27,638,888
combined, among listed positions
Reported value
$190m
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: 9 buyers (opened or added shares) and 19 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,738,113.

Managers listing AMPL in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

24 of 24 holders

ActionFiling
Wellington Management Group LLP11,154,556$76munder 0.1%Added+9,190,50615 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)3,311,284$23munder 0.1%Added+2,865,10415 May 2026 (the filing on sec.gov)
Baillie Gifford & Co2,634,150$18munder 0.1%Trimmed-107,7308 May 2026 (the filing on sec.gov)
Point72 Asset Management LP2,411,300$16munder 0.1%Trimmed-1,087,39415 May 2026 (the filing on sec.gov)
Millennium Management LLC2,031,823$14munder 0.1%Trimmed-220,90715 May 2026 (the filing on sec.gov)
AQR Capital Management LLC1,235,028$8.4munder 0.1%Added+391,59415 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC800,030$5.4munder 0.1%Added+268,48813 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC712,395$4.9munder 0.1%Trimmed-255,56215 May 2026 (the filing on sec.gov)
Two Sigma Investments LP691,661$4.7munder 0.1%Trimmed-349,61315 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP576,301$3.9munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
AllianceBernstein LP317,618$3.7munder 0.1%Trimmed-5,925,69415 May 2026 (the filing on sec.gov)
Man Group PLC478,338$3.3munder 0.1%Added+339,81615 May 2026 (the filing on sec.gov)
Light Street Capital Management LLC292,844$2.0m0.37%Trimmed-1,207,15615 May 2026 (the filing on sec.gov)
Verition Fund Management LLC268,119$1.8munder 0.1%Added+188,43815 May 2026 (the filing on sec.gov)
Invesco Ltd135,201$922kunder 0.1%Added+21,51912 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP123,694$844kunder 0.1%Trimmed-95,16915 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc120,038$819kunder 0.1%Trimmed-3,02415 May 2026 (the filing on sec.gov)
Walleye Capital LLC90,262$616kunder 0.1%Trimmed-348,66713 May 2026 (the filing on sec.gov)
PDT Partners LLC66,964$457kunder 0.1%Trimmed-52,26515 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC47,031$321kunder 0.1%Trimmed-34,61814 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP45,538$311kunder 0.1%Added+31,35615 May 2026 (the filing on sec.gov)
Citadel Advisors LLC36,183$247kunder 0.1%Trimmed-1,339,81915 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd34,774$237kunder 0.1%Held018 May 2026 (the filing on sec.gov)
Jane Street Group LLC23,756$162kunder 0.1%Trimmed-202,91812 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 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 (1)

Exited (5)

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.
1 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

012320222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
AMPL by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20212$138mn.a.n.a.
Q4 20211$99mn.a.n.a.
Q1 20221$1.2mn.a.n.a.
Q2 20221$8.6mn.a.n.a.
Q4 20221$883kn.a.n.a.
Q1 20231$917kn.a.n.a.
Q2 20232$8.6mn.a.n.a.
Q3 20232$10mn.a.n.a.
Q4 20231$772k02
Q1 20241$740k10
Q2 20242$1.6m20
Q3 20241$890k10
Q4 20241$1.0m00
Q1 20252$22m20
Q2 20252$28m11
Q3 20252$30m11
Q4 20253$51m1912
Q1 20263$20m919
Q2 20261$14m918

Compare with…

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

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

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 AMPL, latest filings →Back to the 13F Explorer →