Question 1

Does Cubist Systematic Strategies own MGNI stock?

Accepted Answer

As of its last 13F, for Q3 2025, Cubist Systematic Strategies held 71,251 shares of MGNI (Magnite), worth $1.6M.

Question 2

How many shares of MGNI does Cubist Systematic Strategies own?

Accepted Answer

As of its last 13F, for Q3 2025, Cubist Systematic Strategies held 71,251 shares of MGNI (Magnite).

Question 3

What is Cubist Systematic Strategies' MGNI position worth?

Accepted Answer

As of its last 13F, for Q3 2025, Cubist Systematic Strategies' MGNI position was worth $1.6M.

Question 4

Is Cubist Systematic Strategies buying or selling MGNI?

Accepted Answer

In Q3 2025, Cubist Systematic Strategies opened a new MGNI position of 71,251 shares.

Question 5

When did Cubist Systematic Strategies first buy MGNI?

Accepted Answer

Cubist Systematic Strategies already held MGNI in its Q3 2020 13F, the earliest on record, and listed it in 12 quarterly 13F filings.