Rambus
RMBS
RMBS
507 hedge funds and large institutions have $10.3B invested in Rambus in 2025 Q3 according to their latest regulatory filings, with 122 funds opening new positions, 167 increasing their positions, 162 reducing their positions, and 63 closing their positions.
New
Increased
Maintained
Reduced
Closed
more funds holding in top 10
Funds holding in top 10: →
more first-time investments, than exits
New positions opened: | Existing positions closed:
more capital invested
Capital invested by funds: $ → $
more call options, than puts
Call options by funds: $ | Put options by funds: $
11% more funds holding
Funds holding: 457 → 507 (+50)
1.29% more ownership
Funds ownership: 90.48% → 91.77% (+1.3%)
3% more repeat investments, than reductions
Existing positions increased: 167 | Existing positions reduced: 162
Holders
507
Holding in Top 10
6
Calls
$155M
Puts
$94.8M
Top Buyers
| 1 | +$162M | |
| 2 | +$108M | |
| 3 | +$107M | |
| 4 |
Rafferty Asset Management
New York
|
+$94M |
| 5 |
BlackRock
New York
|
+$84.3M |
Top Sellers
| 1 | -$157M | |
| 2 | -$82M | |
| 3 | -$65M | |
| 4 |
Westfield Capital Management
Boston,
Massachusetts
|
-$49.8M |
| 5 |
Wellington Management Group
Boston,
Massachusetts
|
-$47.5M |
