Question 1

Does D. E. Shaw own RMBS stock?

Accepted Answer

Yes. As of its Q2 2026 13F, D. E. Shaw holds 739,701 shares of RMBS (Rambus), worth $98.2M.

Question 2

How many shares of RMBS does D. E. Shaw own?

Accepted Answer

As of its Q2 2026 13F, D. E. Shaw holds 739,701 shares of RMBS (Rambus).

Question 3

What is D. E. Shaw's RMBS position worth?

Accepted Answer

As of its Q2 2026 13F, D. E. Shaw's RMBS position is worth $98.2M.

Question 4

Is D. E. Shaw buying or selling RMBS?

Accepted Answer

In Q2 2026, D. E. Shaw increased its RMBS position from 12,805 to 739,701 shares.

Question 5

When did D. E. Shaw first buy RMBS?

Accepted Answer

D. E. Shaw already held RMBS in its Q4 2018 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	739,701	+5676.7%	$98.2M	0.0%	$132.74	48
2026-Q1	Decreased	12,805	-30.8%	$1.1M	0.0%	$86.03	0
2025-Q4	Decreased	18,491	-78.5%	$1.7M	0.0%	$91.89	0
2025-Q3	Increased	86,103	+63.9%	$9M	0.0%	$104.20	40
2025-Q2	Decreased	52,532	-7.5%	$3.4M	0.0%	$64.02	0
2025-Q1	Decreased	56,758	-85.6%	$2.9M	0.0%	$51.78	0
2024-Q4	Decreased	394,352	-50.8%	$20.8M	0.0%	$52.86	0
2024-Q3	Increased	800,699	+1402.1%	$33.8M	0.0%	$42.22	47