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Which funds own AMPL

Amplitude in the Q2 2026 filings. At least 1 of the 91 current managers on file reported a position, worth $14m between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.

Managers holding: 1; at least, of 91 current
Combined value: $14m; as reported
Opened: 0; new this quarter
Added to: 0; already held
Trimmed or sold out: 2; 1 sold out entirely

Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.

Managers reporting a position

Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.

Manager	Value	Weight	Shares	Change on the quarter	Action
Baillie Gifford & Co Long-only · $110bn book	$14m	0.0%	1,779,555	-$4.4m-854,595	Trimmed

Sold out of this quarter

Valued at what the position was worth in the previous filing, because by this one it is gone.

Light Street Capital Management LLC · Long/short equity$2.0m held before

Ownership through time

At least 1 of the 95 managers whose filings are on file listed AMPL in Q2 2026, against 2 in Q3 2021. 2 managers fewer than in Q1 2026: 2 sold out, by their own filings.

Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.

Managers on file listing it

Their combined reported value

Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.

Started in Q2 2026

No manager on file started a position.

Largest increases, by shares

No manager on file bought more.

Largest decreases, by shares

Baillie Gifford & Co2,634,150 to 1,779,555 shares-$6.5m

Left it

Light Street Capital Management LLCwas $2.0m
PDT Partners LLCwas $457k

Manager	First listed	Largest	Q2 2026
Baillie Gifford & Co	Q1 2025	$32m	$14m
Lone Pine Capital LLC	Q3 2021	$99m	last listed Q4 2021
Holocene Advisors LP	Q3 2021	$50m	last listed Q3 2021
Light Street Capital Management LLC	Q2 2023	$17m	last listed Q1 2026
Whale Rock Capital Management LLC	Q1 2022	$8.6m	last listed Q2 2022
PDT Partners LLC	Q4 2022	$3.4m	last listed Q1 2026
Woodline Partners LP	Q2 2024	$842k	last listed Q2 2024

What AMPL is worth

Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.

Build the comp set around AMPL →

How much of the picture this is

A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.

What to do with a name the funds are buying

Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.

Comps ExplorerValue it against the peers it trades beside Every managerRead any of these books in full Deal tapeWhat buyers paid for whole companies, not slices Hedge fund interviewsHow the room runs, and the stock pitch it wants

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The holdings, every quarter, and the week between

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