Who Owns Palantir (PLTR)? Institutional Ownership Map

Who owns the most Palantir?

The largest disclosed Palantir holders are the index giants. This is the single most important fact about PLTR ownership and the one most "who owns Palantir" answers get wrong by leading with a hedge fund: the biggest holders are the funds that have to own Palantir because it is a heavyweight in the S&P 500 and major tech indexes.

Values are each filer's reported long position as of its most recent 13F; live figures and the full holder list are on the Palantir ownership page. The "as of" column matters: 13F filings arrive asynchronously, so one quarter's largest filer may be a quarter ahead of another's.

The passive core vs the active money

Read PLTR's holder list as two layers.

The passive core is the top of the table: Vanguard, BlackRock, State Street, Geode, and the index sleeves inside Fidelity. These managers hold Palantir in proportion to its index weight. Their quarter-over-quarter moves track fund flows and index rebalancing far more than any view on the stock. When Vanguard "adds" 0.7%, that is mostly new money flowing into total-market and S&P 500 funds, not a Vanguard analyst turning bullish.

The active money is everyone making a position-sizing decision. That is where the signal lives, and it is mostly further down the list. Last quarter the standout conviction move on the long side came from Winslow Capital Management, a growth-equity shop that grew its PLTR position by roughly 135%, alongside Heard Capital, which added about 46%. On the other side, Citadel cut its disclosed long position by about 40% and ARK Investment Management trimmed close to 4%. None of those is a verdict on the stock by itself, but a screen of who is adding versus trimming, weighted by manager quality, is the actual use of this data. The smart-money leaderboard is the practical starting view.

A word of caution on the raw "biggest add" list, because our brand is sourced provenance: a few of the largest reported percentage jumps in PLTR holdings come from passive or broker-dealer entities (for example a roughly 39% step-up at a large securities group) rather than conviction buying, and any single-quarter swing above a few hundred percent is almost always a share-class reclassification or the Vanguard reorg below, not a manager turning bullish. We surface the active-money storyline from genuinely active managers and flag the rest as mechanical.

One nuance worth keeping in mind: hedge funds frequently express PLTR views through options, and 13F reports put and call positions as flagged rows valued against the underlying. A naive aggregator that sums every PLTR row into a "long book" turns a protective put into a bullish bet. Our data separates option legs from the long-equity book, so a manager's reported PLTR long is the share position, not a blended notional. (More on that trap: 13F options, puts and calls explained.)

A data-quality footnote: the Vanguard reorg

If you pull PLTR ownership from raw EDGAR right now, you will see three Vanguard entities reporting Palantir: Vanguard Group plus two newer entities (Vanguard Portfolio Management LLC and Vanguard Fiduciary Trust Co) that began filing separately after an internal reorganization. Sum all three and you double-count billions of dollars of the same shares, and you will misread the two newer entities' first separate filings as brand-new conviction buying. This is the kind of identifier and entity-resolution problem that makes institutional ownership data hard to keep clean, and it is exactly what a sourced, deduplicated layer is for. We model the reorg so the combined view does not inflate Vanguard's true position. (Background: 13F amendments and restatements.)

What 13F does and does not tell you about PLTR

Four limits to keep in mind before treating any "who owns Palantir" number as complete:

• It lags up to 45 days. A 13F reports positions as of quarter-end and is due 45 days later, so the picture can be a full quarter stale by the time you read it. PLTR can move sharply in that window.
• It is long-only. 13F covers long positions in 13(f) securities. Short positions, cash, and most derivatives net exposure do not appear. A fund that looks "long PLTR" on a 13F may be hedged.
• It misses smaller and foreign holders. Only managers with $100M+ in 13(f) securities must file a Form 13F, so retail, smaller funds, and many non-US holders are invisible here.
• Insiders file separately. Palantir's own officers and directors report their trades on Form 4 within two business days, a different and faster feed than 13F. See insider activity for PLTR and the filing-type comparison.

The honest summary: 13F tells you which large institutions disclosed a Palantir long position at the last quarter-end and how it changed, not who owns Palantir in real time.

How to track Palantir ownership as it updates

The durable workflow is to resolve the entity once, pull the holder list, and diff across quarters rather than reading a single filing. With the REST API:

curl -H "Authorization: Bearer YOUR_KEY" \
  "https://arkolith.com/api/v1/stocks/PLTR"

For an AI agent, the same data is exposed through MCP tools so the assistant can answer "which funds added Palantir last quarter" directly, with each figure carrying its source filing and quarter. Start with the MCP quickstart, the 13F data layer, or the live Palantir ownership page. Every figure on those surfaces is sourced to its SEC EDGAR accession, which is the point: an ownership claim without a filing date and quarter-end is incomplete.

Frequently asked questions

Who is Palantir's largest shareholder?

Among institutional 13F filers, Vanguard Group reports the largest Palantir position, around $38 billion at its latest filing, followed by BlackRock at around $28 billion. Both are index-fund managers holding Palantir in line with its weight in major indexes, not active stock-pickers.

How many institutions own Palantir?

572 institutional managers disclose a Palantir long position in their most recent 13F filings in our dataset, totaling roughly $118 billion in reported value. That count covers managers with at least $100M in 13(f) securities; it excludes retail holders, smaller funds, and many foreign holders that do not file 13F.

Which hedge funds own Palantir?

Many do, but most hold far smaller stakes than the index giants and frequently use options. Recent active moves include Winslow Capital Management roughly doubling its long position and Heard Capital adding about 46%, while Citadel and ARK Investment Management trimmed theirs. Screen the full list, weighted by manager quality, on the investors leaderboard rather than reading one fund in isolation.

Is Palantir mostly owned by index funds?

At the top of the cap table, yes. The largest disclosed holders are all index or quasi-index managers (Vanguard, BlackRock, State Street, Geode, Fidelity), whose stakes track index weight and fund flows. The active, conviction-driven positions sit lower in the list and are where quarter-over-quarter changes carry the most signal.

Is 13F ownership data live?

No. A 13F is a quarterly snapshot filed up to 45 days after quarter-end, so Palantir's disclosed ownership can be months old by the time it publishes. Use it for institutional positioning and quarter-over-quarter changes, never as a live book.

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Arkolith turns SEC ownership filings into clean, sourced, queryable data. See the live Palantir ownership page, connect an agent through the MCP quickstart, or get a key. Not investment advice.