Question 1

Who owns RMBS stock?

Accepted Answer

RMBS (Rambus Inc Del) is held by 3 tracked superinvestors with an aggregate position value of $24M based on the most recent SEC 13F filings. Top institutional holders include: Stanley Druckenmiller, Lee Ainslie, Ray Dalio.

Question 2

How much RMBS do superinvestors hold in aggregate?

Accepted Answer

Across 3 tracked managers, superinvestors collectively report $24M in RMBS positions worth 181,180 shares.

Question 3

What is the largest holder of RMBS?

Accepted Answer

The largest tracked holder of RMBS is Stanley Druckenmiller (Duquesne Family Office) with 173,000 shares worth $23M, representing 0.44% of their portfolio.

Investor	Fund	Shares	Value▼	% of Portfolio	Rpt Price	Period
Stanley Druckenmiller	Duquesne Family Office	173000	$23.0M	0.44%	$132.74	Q2 2026
Lee Ainslie	Maverick Capital	4309	$572K	0.01%	$132.74	Q2 2026
Ray Dalio	Bridgewater Associates	3871	$514K	0.00%	$132.74	Q2 2026

RMBSRambus Inc Del

📊 Holdings Over Time

Quarter-by-Quarter Activity