MarketPeel
Insider Trading Intelligence
EH

Emiko Higashi

RMBS
DIRECTOR · RAMBUS INC · CIK 0001318086
FILING MIX · LIFETIME65%/35%
BUYS
13
SELLS
7
TOTAL VALUE
$3.04M
COMPANIES
2
ACTIVE SINCE
Apr 2020
HOLDINGS NOW
64,285
AVG SELL PX
$120.69
TRADE KIND
SHOWING 20 / 20
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 4 pending
Forward-return performance of every backtestable P/S trade by Emiko Higashi, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d3+66.67%-1.11%+0.85%-1.96%-4.66%
14d3+33.33%+3.08%+2.08%+1.00%-1.87%
30d3+33.33%+5.83%+3.06%+2.77%+2.92%
60d3+0.00%+22.77%+5.94%+16.83%+23.52%
90d3+33.33%+22.51%+9.20%+13.31%+30.74%
180d3+33.33%+29.59%+12.08%+17.52%+36.84%
1y3(2 pending)+100.00%-6.41%+38.06%-44.47%-44.47%
2y3(2 pending)+0.00%+77.76%+56.52%+21.24%+21.24%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
RMBS · 49,519 shares · as of Jun 2, 2026
016,42232,84349,26565,686202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 13 buys / 7 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
RMBS
RAMBUS INC
SALE
5,000$158.00$790.0K49,519Jun 2, 2026Jun 3, 2026View →
RMBS
RAMBUS INC
SALE
5,000$163.00$815.0K54,519Jun 2, 2026Jun 3, 2026View →
RMBS
RAMBUS INC
SALE
5,000$157.57$787.9K59,519May 26, 2026May 27, 2026View →
RMBS
RAMBUS INC
PURCHASEGRANT
Stock grant
2,22364,519Apr 1, 2026Apr 3, 2026View →
RMBS
RAMBUS INC
SALE
1,075$77.75$83.6K62,296Aug 13, 2025Aug 15, 2025View →
RMBS
RAMBUS INC
SALE
1,111$75.00$83.3K63,371Aug 4, 2025Aug 6, 2025View →
RMBS
RAMBUS INC
PURCHASEGRANT
Stock grant
3,82464,482Apr 1, 2025Apr 3, 2025View →
KLAC
KLA CORP
PURCHASEGRANT
Stock grant
35014,766Nov 6, 2024Nov 8, 2024View →
RMBS
RAMBUS INC
PURCHASEGRANT
Stock grant
2,97260,658Apr 1, 2024Apr 2, 2024View →
RMBS
RAMBUS INC
SALE
8,000$60.00$480.0K57,686Nov 8, 2023Nov 9, 2023View →
KLAC
KLA CORP
PURCHASEGRANT
Stock grant
49314,416Nov 1, 2023Nov 3, 2023View →
RMBS
RAMBUS INC
PURCHASEGRANT
Stock grant
3,65365,686Apr 3, 2023Apr 4, 2023View →
KLAC
KLA CORP
PURCHASEGRANT
Stock grant
70414,182Nov 2, 2022Nov 4, 2022View →
RMBS
RAMBUS INC
PURCHASEGRANT
Stock grant
5,40862,033Apr 1, 2022Apr 4, 2022View →
KLAC
KLA CORP
PURCHASEGRANT
Stock grant
55813,478Nov 3, 2021Nov 4, 2021View →
RMBS
RAMBUS INC
PURCHASEGRANT
Stock grant
8,53856,625Apr 1, 2021Apr 2, 2021View →
KLAC
KLA CORP
PURCHASEGRANT
Stock grant
906906Nov 4, 2020Nov 6, 2020View →
KLAC
KLA CORP
PURCHASE
1,16212,014Nov 4, 2020Nov 6, 2020View →
KLAC
KLA CORP
SALE
1,1620Nov 4, 2020Nov 6, 2020View →
RMBS
RAMBUS INC
PURCHASEGRANT
Stock grant
13,92748,087Apr 1, 2020Apr 2, 2020View →
Other insiders · RMBS
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About this filer
CIK 0001318086
ROLE
Director
PRIMARY
RMBS
COMPANIES
2
ACTIVE SINCE
Apr 2020
MARKETPEEL · /INSIDER/0001318086DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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