Rambus Inc.· RMBS

🇺🇸 US · LargeSP400NASDAQ

TechnologySemiconductorsWebsite

Price: $100.55
Day: +9.04%
Mkt Cap: $10.91B
52W Range: $67.15 – $174.10
Volume: 2.44M
Beta: 1.84

D55D FrameworkQuarterly Data

Holdings Analysis

Insider activity, institutional flows, and fund ownership.

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stockoscope.com

Rambus Inc.

RMBS|Technology|Semiconductors

Current price: $101

Smart Money

Dimension 5 of 5

Insider Activity, Q2 2026

Latest scored quarter, net flow, and top transactions by value

Net dollar flow-$12.4M

Net share flow-87.2K

Purchases0 ($0)

Sales14 ($12.4M)

Top Notable Transactions

Insider

Type

Value

Date

FAN XIANZHI SEAN

Sale

$5.7M

May 26

FAN XIANZHI SEAN

Sale

$3.6M

Feb 19

FAN XIANZHI SEAN

Sale

$2.0M

Nov 18

Institutional Ownership, Q1 2026

Ownership share, position changes, share flow, and top holders

Ownership95.4%

13F share flow-4.0%

Investors holding568

+353 adding-293 reducing

270

209

New 83Inc 270Red 209Closed 84

Top Institutional Holders

Institution

Value

Change

BLACKROCK, INC.

$1.4B

+0.2%

INVESCO LTD.

$559.1M

+56.7%

STATE STREET CORP

$376.3M

+2.9%

PRICE T ROWE ASSOCIATES INC /MD/

$290.5M

-37.3%

ETF & Mutual Fund Activity, Q2 2026

Latest meaningful quarter: fund-by-fund buying / unchanged / selling

Funds reporting179

Total shares held31.9M

Share flow-8.6%

49 buying53 selling

Buying 49Unchanged 77Selling 53

Top Fund Holders

Fund

Weight

Change

JPMORGAN TRUST II

853.4K

0.04%

AIM COUNSELOR SERIES TRUST (INVESCO COUNSELOR SERIES TRUST)

726.4K

0.28%

FIDELITY PURITAN TRUST

613.4K

1.09%

+613.4K

Manager Directed Portfolios

418.4K

137.36%

See the complete picture

The full 5D Framework: Business Quality · Peer Comparison · Valuation · Analyst Sentiment · Smart Money

Explore RMBS on stockoscope.com→

Generated August 5, 2026

For educational purposes only. Not financial advice. Data may be delayed or incomplete.

Smart Money Sentiment

RMBS Smart Money Sentiment Score

A weighted 1-5 sentiment score across three smart money signals.

Smart Money

3.1/5

Neutral

Weighted across 3 components

Component Breakdown (3 of 3 available)

Insider Activity

40% weight

-35

Institutional Flow

50% weight

+36

Fund Flow

10% weight

Overall Smart Money sentiment of 3.1/5 (Neutral) based on a weighted combination of 3 components. Insider activity uses a relative-baseline comparison against the stock's own history; institutional flow tracks position momentum and 13F share changes; fund flow measures ETF / mutual-fund buying vs selling. Higher scores indicate stronger bullish sentiment from professional investors.Last updated August 4, 2026.

Insider Trading Activity

Insider trading analysis comparing the latest quarter against the stock's own historical baseline.

Insider Activity for RMBS

Net insider share flow by quarter (C-suite & director purchases minus sales)

Bearish Signal

Elevated insider selling in Q2 2026

14 sales totaling $12.4M (87.2K shares)

Share volume is elevated at 2.0x the historical average

Sell-only pattern: no insider purchases across 7 quarters

Steady selling pace across recent quarters

Notable Recent Transactions, RMBS

Top 8 highest-value recent insider trades

FAN XIANZHI SEAN

COO

Sell

37,814 shares at $151.69

May 26, 2026$5.74M

FAN XIANZHI SEAN

COO

Sell

52,327 shares at $68.02

Feb 19, 2025$3.56M

FAN XIANZHI SEAN

COO

Sell

52,852 shares at $37.88

Nov 18, 2022$2.00M

FAN XIANZHI SEAN

COO

Sell

51,772 shares at $38.51

Nov 15, 2022$1.99M

FAN XIANZHI SEAN

COO

Sell

20,000 shares at $68.73

Feb 5, 2024$1.37M

Seraphin Luc

CEO

Sell

13,654 shares at $98.22

Mar 2, 2026$1.34M

Sayiner Necip

Director

Sell

9,824 shares at $130.18

May 8, 2026$1.28M

FAN XIANZHI SEAN

COO

Sell

20,000 shares at $60.99

Mar 1, 2024$1.22M

Institutional Ownership Analysis

Institutional ownership analysis with position momentum, 13F share flow, and ownership percentage trends.

Institutional Ownership Over Time for RMBS

Total dollar value invested by institutions each quarter

Bullish Signal

Institutions accumulating in Q1 2026

95.4% institutional ownership

Slight accumulation: 353 adding vs 293 reducing

13F shares increased by 2.8%, a notable change

Momentum weakening from prior quarter

Position Changes

Q2 2026: how are institutions adjusting their positions?

+157 growing-459 shrinkingNet: -302

111

381

New (46)

Increased (111)

Reduced (78)

Closed (381)

Top Institutional Holders, RMBS

Largest 8 institutional positions by ownership percentage as of Q2 2026

SWEDBANK AB

1.6M

$218.6M

Ownership

1.52%

+5.3%

CONGRESS ASSET MANAGEMENT CO /MA

778.0K

$103.3M

Ownership

0.72%

-39.0%

FISHER ASSET MANAGEMENT, LLC

705.8K

$93.7M

Ownership

0.65%

-4.4%

CITIGROUP INC

532.4K

$70.7M

Ownership

0.49%

-47.2%

PRINCIPAL FINANCIAL GROUP INC

430.0K

$57.1M

Ownership

0.40%

+15.1%

STEPHENS INVESTMENT MANAGEMENT GROUP LLC

409.4K

$54.3M

Ownership

0.38%

+0.4%

MIRAE ASSET GLOBAL INVESTMENTS CO., LTD.

154.9K

$20.6M

Ownership

0.14%

+15.3%

HANDELSBANKEN FONDER AB

150.9K

$20.0M

Ownership

0.14%

+28.1%

ETF and Mutual Fund Holdings

ETF and mutual fund activity breakdown showing buying vs selling funds, top fund holders, and detailed holdings.

Fund Activity

Q2 2026: 179 ETFs and mutual funds reporting

49 buying53 sellingNet: -4

Buying (49)

Unchanged (77)

Selling (53)

Neutral

Mixed fund activity in Q2 2026

179 ETFs and mutual funds reporting

49 buying vs 53 selling (balanced)

Top Fund Holders, RMBS

Largest 8 ETF and mutual fund positions by shares held as of latest filing

JPMORGAN TRUST II

853.4K

Weight

0.04%

No change

AIM COUNSELOR SERIES TRUST (INVESCO COUNSELOR SERIES TRUST)

726.4K

Weight

0.28%

No change

FIDELITY PURITAN TRUST

613.4K

Weight

1.09%

Increased

Manager Directed Portfolios

418.4K

Weight

137.36%

No change

NEUBERGER BERMAN EQUITY FUNDS

353.6K

Weight

2.14%

Decreased

VALIC Co I

131.0K

Weight

0.05%

Increased

AMERICAN CENTURY ETF TRUST

37.1K

Weight

0.02%

Decreased

MORGAN STANLEY PATHWAY FUNDS

32.5K

Weight

0.01%

Increased

Rambus Inc.· RMBS

Holdings Analysis

Insider Trading Activity

1.3Transaction History181Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings104Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights

Search stocks

Holdings Analysis

Insider Trading Activity

1.3Transaction History181Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings104Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights