Ticker · CUSIP 462726100

I8R

IROBOT CORP
···Share
Holders (tracked)
9
Combined shares
1,556,513
Combined value
$5.59M
Last close
—
Quarter
2025Q3
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
9122023Q42025Q3

SEC event timeline

13 events
  1. Ken Griffin (Citadel Advisors) exited2026-02-17
    −31,272 shares · 2025Q4
    Position
  2. D.E. Shaw & Co. exited2026-02-17
    −253,800 shares · 2025Q4
    Position
  3. Two Sigma Investments exited2026-02-17
    −568,257 shares · 2025Q4
    Position
  4. Izzy Englander (Millennium Mgmt) exited2026-02-17
    −225,968 shares · 2025Q4
    Position
  5. T. Rowe Price exited2026-02-17
    −64,540 shares · 2025Q4
    Position
  6. Renaissance Technologies exited2026-02-12
    −116,676 shares · 2025Q4
    Position
  7. Mario Gabelli (GAMCO) exited2026-02-05
    −33,700 shares · 2025Q4
    Position
  8. Izzy Englander (Millennium Mgmt) trimmed2025-11-14
    −187,288 shares · 2025Q3
    Position
  9. Two Sigma Investments added2025-11-14
    +229,151 shares · 2025Q3
    Position
  10. T. Rowe Price added2025-11-14
    +20,600 shares · 2025Q3
    Position
  11. AQR Capital Management exited2025-11-14
    −112,097 shares · 2025Q3
    Position
  12. Renaissance Technologies trimmed2025-11-13
    −461,912 shares · 2025Q3
    Position
  13. Mario Gabelli (GAMCO) trimmed2025-11-12
    −2,500 shares · 2025Q3
    Position

Insider activity

No insider transactions in the last 30 days.
View full insider history for I8R →

Who moved on this name in 2025Q3

Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to2
Trimmed3
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2021Q4
19
$147.8M
2022Q1
18
$17.66B
2022Q2
16
$10.26B
2022Q3
14
$332.7M
2022Q4
15
$266.3M
2023Q1
15
$278.6M
2023Q2
13
$267.7M
2023Q3
14
$235.0M
2023Q4
12
$241.5M
2024Q1
12
$36.3M
2024Q2
12
$36.8M
2024Q3
12
$17.5M
2024Q4
12
$16.8M
2025Q1
10
$3.4M
2025Q2
10
$7.0M
2025Q3
9
$5.6M

Who owns I8R

9 super-investors · 2025Q3
Tracked stake
1.56M
shares
Combined value
$6M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added2Trim3Held4
#ManagerSharesValue
1Two Sigma Investments568.3K$2M
2D.E. Shaw & Co.253.8K$911K
3Izzy Englander
Millennium Mgmt
226.0K$811K
4Ken Griffin
Citadel Advisors
213.7K$767K
5Renaissance Technologies116.7K$419K
6T. Rowe Price64.5K$232K
7Ken Griffin
Citadel Advisors
48.6K$174K
8Mario Gabelli
GAMCO
33.7K$121K
9Ken Griffin
Citadel Advisors
31.3K$112K

Recent moves

20 transactions
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