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Stock Ownership and SEC Filings

Ownership data tells you who holds a stock and what they have recently done with it, sourced from mandatory SEC filings. Both main sources are disclosed on a delay, insider Form 4 filings within two business days, institutional 13F holdings up to 45 days after quarter end, so the data is reliable about the past and says nothing certain about current positioning.

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Direct Answer

Ownership data shows who holds a stock and what they have recently done with it, sourced from mandatory SEC filings rather than estimates. Every source is disclosed on a delay: insider Form 4 filings within two business days, institutional 13F holdings up to 45 days after quarter end. That lag is the defining constraint, because ownership data describes a position that may already have changed.

Is insider buying a signal?

Sometimes, and it depends heavily on the transaction code. An open-market purchase by an officer using their own money is a different event from a scheduled sale under a 10b5-1 plan or the automatic vesting of a share grant, yet all appear on Form 4. Reading the code is what separates the signal from the paperwork.

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