Ticker · CUSIP 74766W108

QUBT

QUANTUM COMPUTING INC

Technology·Computer Hardware

···Share

Holders (tracked)

Combined shares

7,003,829

Combined value

$71.86M

Last close

$9.57

Quarter

2025Q4

Price is -6.7% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$9.57+3.16 (+49.30%)H $24.62 · L $5.87 · Avg Vol 24.1M

Position opened

Tracked holders · last 8 quarters

+3 vs previous quarter over the last 8.

SEC event timeline

13 events

Ken Griffin (Citadel Advisors) trimmed2026-02-17
−4,018,564 shares · 2025Q4
Position
D.E. Shaw & Co. opened position2026-02-17
+136,820 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+39,500 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+52,200 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+87,383 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+13,671 shares · 2025Q4
Position
Two Sigma Investments exited2026-02-17
−40,705 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) exited2026-02-17
−230,302 shares · 2025Q4
Position
Renaissance Technologies opened position2026-02-12
+135,223 shares · 2025Q4
Position
T. Rowe Price added2025-11-14
+17,951 shares · 2025Q3
Position
AQR Capital Management opened position2025-11-14
+23,602 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+117,972 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+1,001 shares · 2025Q3
Position

Insider activity

Last 30 days

Net (open-market)

Buys

0 · $0

Sells

0 · $0

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-13	FAGENSON ROBERT B Director	A	22,123	$6.78	$150.0K
04-13	TURMELLE MICHAEL C Director	A	22,123	$6.78	$150.0K
04-13	Weimer Carl Scott Director	A	22,123	$6.78	$150.0K
04-13	Shabani Javad Director	A	22,123	$6.78	$150.0K
04-13	Schwartz Eric Mark Director	A	22,123	$6.78	$150.0K

View full insider history for QUBT →

Follow-the-investor returns

If you'd copied each holder of QUBT…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Paul Tudor Jones (Tudor Investment)	2025Q1	$8.00	+19.6%	$500K
D.E. Shaw & Co.	2021Q4	$9.61	-0.4%	$1.3M
D.E. Shaw & Co.	2021Q4	$9.61	-0.4%	$1.3M
Steve Cohen (Point72)	2025Q4	$10.26	-6.7%	$378K
Renaissance Technologies	2025Q4	$10.26	-6.7%	$1.3M
T. Rowe Price	2025Q1	$13.53	-29.3%	$1.8M
Ken Griffin (Citadel Advisors)	2022Q1	$15.13	-36.7%	$15.8M
Ken Griffin (Citadel Advisors)	2022Q1	$15.13	-36.7%	$15.8M
Ken Griffin (Citadel Advisors)	2022Q1	$15.13	-36.7%	$15.8M
AQR Capital Management	2025Q3	$15.42	-37.9%	$357K
Izzy Englander (Millennium Mgmt)	2021Q3	$16.96	-43.6%	$545K

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions4

D.E. Shaw & Co.
+136,820
$1.4M
Renaissance Technologies
+135,223
$1.4M
Paul Tudor Jones (Tudor Investment)
+52,200
$536K
Steve Cohen (Point72)
+39,500
$405K

Added to2

AQR Capital Management
+13,671
$140K
T. Rowe Price
+87,383
$897

Trimmed1

Ken Griffin (Citadel Advisors)
−4,018,564
$41.2M

Exited2

Izzy Englander (Millennium Mgmt)
−230,302
$4.2M
Two Sigma Investments
−40,705
$749K

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	5	356,328	$925K	—
2022Q2	2	328,113	$781K	-3
2022Q3	2	288,351	$724K	—
2022Q4	4	315,790	$477K	+2
2023Q1	4	290,862	$381K	—
2023Q2	3	477,779	$564K	-1
2023Q3	2	394,282	$426K	-1
2023Q4	4	602,786	$550K	+2
2024Q1	4	488,394	$484K	—
2024Q2	4	324,312	$163K	—
2024Q3	3	132,447	$86K	-1
2024Q4	4	3,289,919	$54.4M	+1
2025Q1	7	5,381,640	$43.1M	+3
2025Q2	6	5,954,166	$114.1M	-1
2025Q3	8	11,279,003	$207.6M	+2
2025Q4	11	7,003,829	$71.9M	+3

Who owns QUBT

11 super-investors · 2025Q4

Tracked stake

7.00M

Combined value

$72M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New5Added2Trim3Sold1

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Ken Griffin Citadel Advisors	2.39M	$24M	0.0%	Trim−4.02M
2	Ken Griffin Citadel Advisors	2.19M	$22M	0.0%	Trim−4.02M
3	Ken Griffin Citadel Advisors	1.65M	$17M	0.0%	Trim−4.02M
4	T. Rowe Price	184.8K	$2M	0.0%	Added+87.4K
5	D.E. Shaw & Co.	136.8K	$1M	0.0%	New+136.8K
6	D.E. Shaw & Co.	135.6K	$1M	0.0%	New+136.8K
7	Renaissance Technologies	135.2K	$1M	0.0%	New+135.2K	—
8	Izzy Englander Millennium Mgmt	57.0K	$585K	0.0%	Sold−230.3K
9	Paul Tudor Jones Tudor Investment	52.2K	$536K	0.0%	New+52.2K
10	Steve Cohen Point72	39.5K	$405K	0.0%	New+39.5K	—
11	AQR Capital Management	37.3K	$382K	0.0%	Added+13.7K

Recent moves

20 transactions

TRIMKen Griffin (Citadel Advisors)
−4,018,564 · 2025Q4
NEWD.E. Shaw & Co.
+136,820 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+52,200 · 2025Q4
ADDAQR Capital Management
+13,671 · 2025Q4
NEWSteve Cohen (Point72)
+39,500 · 2025Q4
ADDT. Rowe Price
+87,383 · 2025Q4
SOLDTwo Sigma Investments
−40,705 · 2025Q4
SOLDIzzy Englander (Millennium Mgmt)
−230,302 · 2025Q4
NEWRenaissance Technologies
+135,223 · 2025Q4
NEWAQR Capital Management
+23,602 · 2025Q3
ADDTwo Sigma Investments
+1,001 · 2025Q3
ADDT. Rowe Price
+17,951 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+117,972 · 2025Q3
SOLDPaul Tudor Jones (Tudor Investment)
−857,885 · 2025Q2
TRIMIzzy Englander (Millennium Mgmt)
−539,125 · 2025Q2
ADDT. Rowe Price
+56,980 · 2025Q2
ADDIzzy Englander (Millennium Mgmt)
+483,940 · 2025Q1
NEWPaul Tudor Jones (Tudor Investment)
+857,885 · 2025Q1
NEWT. Rowe Price
+22,458 · 2025Q1
NEWIzzy Englander (Millennium Mgmt)
+167,515 · 2024Q4

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