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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 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 23 Jan 2026
Managers listing it
29
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 2 listed it in both
Shares listed
26,461,275
combined, among listed positions
Reported value
$306m
combined, at the quarter end

Among the 92 comparable managers: 19 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +5,505,234.

Managers listing AMPL in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

29 of 29 holders

ActionFiling
AllianceBernstein LP6,243,312$72munder 0.1%Added+217,92217 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP3,498,694$41munder 0.1%Added+2,222,58917 Feb 2026 (the filing on sec.gov)
Baillie Gifford & Co2,741,880$32munder 0.1%Added+59,98423 Jan 2026 (the filing on sec.gov)
Millennium Management LLC2,252,730$26munder 0.1%Added+191,04917 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP1,964,050$23munder 0.1%Trimmed-62,54817 Feb 2026 (the filing on sec.gov)
Light Street Capital Management LLC1,500,000$17m2.67%Newnew17 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC1,376,002$16munder 0.1%Added+803,47817 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP1,041,274$12munder 0.1%Added+345,41117 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC967,957$11munder 0.1%Added+209,88713 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC843,434$9.8munder 0.1%Added+202,34917 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP560,500$6.5munder 0.1%Added+298,50017 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC531,542$6.1munder 0.1%Added+162,95810 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)446,180$5.2munder 0.1%Trimmed-418,62617 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC438,929$5.1munder 0.1%Added+267,13213 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC402,828$4.7munder 0.1%Trimmed-165,68817 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP255,399$3.0munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC226,674$2.6munder 0.1%Trimmed-267,52712 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP218,863$2.5munder 0.1%Added+94,65617 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP171,876$2.0munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Man Group PLC138,522$1.6munder 0.1%Added+120,72817 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc123,062$1.4munder 0.1%Trimmed-89,19017 Feb 2026 (the filing on sec.gov)
PDT Partners LLC119,229$1.4m0.09%Trimmed-36,05517 Feb 2026 (the filing on sec.gov)
Invesco Ltd113,682$1.3munder 0.1%Added+16,00919 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC81,649$945kunder 0.1%Trimmed-93,46612 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC79,681$923kunder 0.1%Trimmed-5,51813 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, 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 (3)

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 →