Who Owns Rambus Inc. (RMBS)?Hedge Fund & Institutional Holders
Institutional Holders
10
as of Q4 2025
Total Institutional Value
$7332364820001879040.0T
% of Float Held
7.465620171850051e+31%
QoQ Change in Holders
+0 / -0
Price History
RMBS — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| Pacer Advisors, Inc. | Increased | +20K | +$1.4M |
Top Institutional Holders(Q4 2025)
| # | Fund | Shares | Value | % of Portfolio | Type |
|---|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | 79,800 | $7.3M | 0.00% | Call |
| 2 | IMC-Chicago, LLC | 39,700 | $3.6M | 0.00% | Put |
| 3 | SIMPLEX TRADING, LLC | 32,200 | $2.0M | 0.00% | Call |
| 4 | Pacer Advisors, Inc. | 20,459 | $1.9M | 0.00% | Share |
| 5 | GROUP ONE TRADING LLC | 18,500 | $1.7M | 0.00% | Put |
| 6 | GROUP ONE TRADING LLC | 13,800 | $1.3M | 0.00% | Call |
| 7 | Pacer Advisors, Inc. | 10 | $0 | 0.00% | Share |
| 8 | CHESAPEAKE ASSET MANAGEMENT LLC | 2 | $0 | 0.00% | Put |
| 9 | OSAIC HOLDINGS, INC. | 2 | $0 | 0.00% | Call |
| 10 | SIMPLEX TRADING, LLC | 5,000 | $0 | 0.00% | Put |
RMBS Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 1 | $1.9M | +0 |
| Q3 2025 | 1 | $431K | +0 |
| Q2 2025 | 1 | $434K | +0 |
| Q1 2025 | 1 | $434K | +0 |
| Q4 2024 | 1 | $0 | +0 |
| Q3 2024 | 1 | $0 | +0 |
| Q2 2024 | 1 | $125K | +0 |
| Q1 2024 | 1 | $10.8M | — |
Similar Stocks by Institutional Ownership
As of Q4 2025, 10 institutional investors hold RMBS (Rambus Inc.). The largest holder is IMC-Chicago, LLC with $7.3M in shares. This quarter, 0 institutions opened new positions and 0 closed their positions.
Frequently Asked Questions
How many hedge funds own RMBS?
As of Q4 2025, 10 institutional investors report holding RMBS (Rambus Inc.) in their 13F filings.
Who is the largest institutional holder of RMBS?
The largest institutional holder of RMBS is IMC-Chicago, LLC with $7.3M in shares.
Is institutional ownership of RMBS increasing or decreasing?
This quarter, 0 institutions opened new positions in RMBS and 0 closed their positions.