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Ken Fisher's Rambus Inc. (RMBS) position

Yes: as of Q1 2026, Ken Fisher holds 738K shares of RMBS worth $64M (0.0% of the disclosed portfolio). Last quarter the position was increased by 42.7%. First disclosed Q3 2025.
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Current value
$64M
Shares held
738K
% of portfolio
0.0%
Est. average buy price (i)
$94.41
Quarter-end price
$86.03

Estimated trade prices

Average price in quarters with purchases
$94.41

RMBS price vs Fisher's position

1Y 3Y 5Y MAX
Dates
$30$100$150$200202420252026New position of 153K shares · Q3 2025. Average closing price $77.09 · Price range $62.85–$107.38153KsharespurchasedAdded 364K shares (238.4%) · Q4 2025. Average closing price $98.41 · Price range $87.28–$113.61364KsharespurchasedAdded 221K shares (42.7%) · Q1 2026. Average closing price $99.79 · Price range $79.73–$125.93221Ksharespurchased
Average closing price · filing quarter
$99.79
Price range · filing quarter
$79.73 – $125.93
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +221K +$22M +42.7% 738K May 5, 2026
Q4 2025 Added +364K +$36M +238.4% 517K Feb 9, 2026
Q3 2025 New +153K +$12M – 153K Nov 12, 2025
Data through Q1 2026 · filed May 5, 2026
3 grouped rows from 3 quarters

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Common questions

Does Ken Fisher own RMBS?

Yes. As of Q1 2026, Ken Fisher disclosed 738K shares of RMBS, worth $64M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Fisher buy RMBS?

Ken Fisher first disclosed a RMBS position in Q3 2025; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Fisher sell RMBS?

The quarter-by-quarter table above shows each sale and reduction Ken Fisher disclosed in RMBS. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of RMBS does Ken Fisher own?

Ken Fisher disclosed 738K shares of RMBS as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Fisher pay for RMBS?

Ken Fisher's estimated average buy price for RMBS is $94.41, from quarter-average prices weighted by the shares added each quarter. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.