Ticker · CUSIP 83422E204

SLDB

SOLID BIOSCIENCES INC

Healthcare·Biotechnology

···Share

Holders (tracked)

Combined shares

6,009,577

Combined value

$33.89M

Last close

$8.63

Quarter

2025Q4

Price is +53.0% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$8.63+6.08 (+238.43%)H $8.63 · L $2.55 · Avg Vol 1.3M

Position opened

Tracked holders · last 8 quarters

+1 vs previous quarter over the last 8.

SEC event timeline

16 events

Ken Griffin (Citadel Advisors) added2026-02-17
+71,166 shares · 2025Q4
Position
D.E. Shaw & Co. opened position2026-02-17
+128,260 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−2,443 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−793,069 shares · 2025Q4
Position
Steve Cohen (Point72) added2026-02-17
+1,083,103 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−40,715 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+900 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−410,900 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) opened position2026-02-09
+103,481 shares · 2025Q4
Position
Two Sigma Investments trimmed2025-11-14
−18,150 shares · 2025Q3
Position
Steve Cohen (Point72) added2025-11-14
+66,948 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+973 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−189,672 shares · 2025Q3
Position
Wellington Management added2025-11-14
+90,636 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+2,010 shares · 2025Q3
Position
Renaissance Technologies opened position2025-11-13
+463,700 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for SLDB →

Follow-the-investor returns

If you'd copied each holder of SLDB…

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
T. Rowe Price	2025Q1	$4.58	+88.3%	$303K
AQR Capital Management	2024Q3	$4.82	+79.0%	$1.1M
D.E. Shaw & Co.	2024Q4	$4.98	+73.5%	$1.1M
Steve Cohen (Point72)	2024Q2	$5.40	+59.9%	$20.9M
Ken Fisher (Fisher Asset Mgmt)	2025Q4	$5.64	+53.0%	$893K
Ken Griffin (Citadel Advisors)	2023Q1	$5.64	+52.9%	$23.0M
Ken Griffin (Citadel Advisors)	2023Q1	$5.64	+52.9%	$23.0M
Renaissance Technologies	2022Q4	$5.68	+51.9%	$456K
Two Sigma Investments	2023Q4	$6.02	+43.3%	$1.3M
Wellington Management	2024Q2	$6.26	+37.9%	$1.6M
Izzy Englander (Millennium Mgmt)	2022Q4	$6.81	+26.8%	$1.0M

Who moved on this name in 2025Q4

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

New positions2

D.E. Shaw & Co.
+128,260
$723K
Ken Fisher (Fisher Asset Mgmt)
+103,481
$584K

Added to3

Steve Cohen (Point72)
+1,083,103
$6.1M
Ken Griffin (Citadel Advisors)
+71,166
$401K
AQR Capital Management
+900
$5K

Trimmed4

Izzy Englander (Millennium Mgmt)
−793,069
$4.5M
Renaissance Technologies
−410,900
$2.3M
Wellington Management
−40,715
$230K
Two Sigma Investments
−2,443
$14K

Exited0

—

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2022Q4	3	208,673	$1.1M	—
2023Q1	5	189,676	$899K	+2
2023Q2	2	165,714	$868K	-3
2023Q3	2	159,853	$403K	—
2023Q4	3	189,367	$1.2M	+1
2024Q1	7	1,252,131	$16.7M	+4
2024Q2	9	3,947,699	$22.4M	+2
2024Q3	9	2,978,079	$20.8M	—
2024Q4	7	1,997,804	$8.0M	-2
2025Q1	9	3,066,917	$11.3M	+2
2025Q2	9	5,419,945	$26.4M	—
2025Q3	10	5,885,694	$36.3M	+1
2025Q4	11	6,009,577	$33.9M	+1

Who owns SLDB

11 super-investors · 2025Q4

Tracked stake

6.01M

Combined value

$34M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added4Trim4Held1

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Ken Griffin Citadel Advisors	2.66M	$15M	0.0%	Added+71.2K
2	Steve Cohen Point72	2.42M	$14M	0.0%	Added+1.08M
3	Wellington Management	185.7K	$1M	0.0%	Trim−40.7K
4	Two Sigma Investments	153.4K	$865K	0.0%	Trim−2.4K
5	AQR Capital Management	132.0K	$744K	0.0%	Added+900
6	D.E. Shaw & Co.	128.3K	$723K	0.0%	New+128.3K
7	Izzy Englander Millennium Mgmt	116.6K	$658K	0.0%	Trim−793.1K
8	Ken Fisher Fisher Asset Mgmt	103.5K	$584K	0.0%	New+103.5K	—
9	Renaissance Technologies	52.8K	$298K	0.0%	Trim−410.9K
10	T. Rowe Price	35.1K	$198K	0.0%	Held
11	Ken Griffin Citadel Advisors	22.3K	$126K	0.0%	Added+71.2K

Recent moves

20 transactions

ADDKen Griffin (Citadel Advisors)
+71,166 · 2025Q4
TRIMWellington Management
−40,715 · 2025Q4
TRIMTwo Sigma Investments
−2,443 · 2025Q4
NEWD.E. Shaw & Co.
+128,260 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−793,069 · 2025Q4
ADDSteve Cohen (Point72)
+1,083,103 · 2025Q4
ADDAQR Capital Management
+900 · 2025Q4
TRIMRenaissance Technologies
−410,900 · 2025Q4
NEWKen Fisher (Fisher Asset Mgmt)
+103,481 · 2025Q4
TRIMTwo Sigma Investments
−18,150 · 2025Q3
ADDT. Rowe Price
+2,010 · 2025Q3
ADDSteve Cohen (Point72)
+66,948 · 2025Q3
ADDWellington Management
+90,636 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−189,672 · 2025Q3
ADDAQR Capital Management
+973 · 2025Q3
NEWRenaissance Technologies
+463,700 · 2025Q3
ADDTwo Sigma Investments
+104,506 · 2025Q2
ADDIzzy Englander (Millennium Mgmt)
+564,809 · 2025Q2
ADDSteve Cohen (Point72)
+1,064,638 · 2025Q2
ADDT. Rowe Price
+21,519 · 2025Q2

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