Ticker · CUSIP 604749101

MIRM

MIRUM PHARMACEUTICALS INC

Healthcare·Biotechnology

···Share

Holders (tracked)

Combined shares

6,053,178

Combined value

$478.14M

Last close

$97.95

Quarter

2025Q4

Price is +24.0% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$97.95+58.85 (+150.51%)H $108.62 · L $38.39 · Avg Vol 671K

Position opened

Tracked holders · last 8 quarters

+4 vs previous quarter over the last 8.

SEC event timeline

22 events

Ramasastry Saira
2026-04-15
Sold $193.8K @ $96.90
Insider sell
Ken Griffin (Citadel Advisors) trimmed2026-02-17
−200,324 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+24,652 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+5,205 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+1,090 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+45,416 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−64,758 shares · 2025Q4
Position
Steve Cohen (Point72) trimmed2026-02-17
−600,037 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+137,087 shares · 2025Q4
Position
Wellington Management added2026-02-17
+447,141 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−74,363 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+263,175 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) opened position2026-02-09
+14,089 shares · 2025Q4
Position
AQR Capital Management trimmed2025-11-14
−16,121 shares · 2025Q3
Position
Steve Cohen (Point72) added2025-11-14
+531,809 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+171,312 shares · 2025Q3
Position
Wellington Management added2025-11-14
+672,118 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+20,872 shares · 2025Q3
Position
D.E. Shaw & Co. added2025-11-14
+368,552 shares · 2025Q3
Position
T. Rowe Price trimmed2025-11-14
−133,927 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+117,100 shares · 2025Q3
Position
Norges Bank (Norway SWF) opened position2025-11-12
+248,157 shares · 2024Q3
Position

Insider activity

Last 30 days

Net (open-market)

−$193.8K

Buys

0 · $0

Sells

1 · $193.8K

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-15	Ramasastry Saira Insider	M	2,000	$23.51	$47.0K
04-15	Ramasastry Saira Insider	S	2,000	$96.90	$193.8K

View full insider history for MIRM →

Follow-the-investor returns

If you'd copied each holder of MIRM…

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)	2020Q4	$26.55	+269.0%	$510K
T. Rowe Price	2022Q3	$34.90	+180.6%	$139.1M
Izzy Englander (Millennium Mgmt)	2019Q3	$36.04	+171.8%	$23.9M
Norges Bank (Norway SWF)	2024Q3	$41.28	+137.3%	$25.8M
AQR Capital Management	2022Q3	$42.44	+130.8%	$3.2M
Renaissance Technologies	2020Q2	$51.77	+89.2%	$43.0M
D.E. Shaw & Co.	2020Q2	$55.85	+75.4%	$92.9M
Two Sigma Investments	2020Q2	$57.29	+71.0%	$38.1M
Wellington Management	2020Q4	$70.99	+38.0%	$121.2M
Steve Cohen (Point72)	2020Q2	$78.05	+25.5%	$18.7M
Steve Cohen (Point72)	2020Q2	$78.05	+25.5%	$18.7M
Steve Cohen (Point72)	2020Q2	$78.05	+25.5%	$18.7M
Ken Griffin (Citadel Advisors)	2020Q2	$78.90	+24.1%	$82.3M
Ken Griffin (Citadel Advisors)	2020Q2	$78.90	+24.1%	$82.3M
Ken Fisher (Fisher Asset Mgmt)	2025Q4	$78.99	+24.0%	$1.4M

Who moved on this name in 2025Q4

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

New positions3

Norges Bank (Norway SWF)
+263,175
$20.8M
Ken Fisher (Fisher Asset Mgmt)
+14,089
$1.1M
Paul Tudor Jones (Tudor Investment)
+5,205
$411K

Added to5

Wellington Management
+447,141
$35.3M
Two Sigma Investments
+45,416
$3.6M
D.E. Shaw & Co.
+24,652
$1.9M
AQR Capital Management
+1,090
$86K
T. Rowe Price
+137,087
$11K

Trimmed4

Steve Cohen (Point72)
−600,037
$47.4M
Ken Griffin (Citadel Advisors)
−200,324
$15.8M
Renaissance Technologies
−74,363
$5.9M
Izzy Englander (Millennium Mgmt)
−64,758
$5.1M

Exited0

—

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	9	1,736,637	$38.2M	—
2022Q2	7	2,205,583	$42.9M	-2
2022Q3	8	2,964,168	$62.3M	+1
2022Q4	9	4,192,428	$81.8M	+1
2023Q1	10	3,870,396	$93.0M	+1
2023Q2	10	4,325,412	$111.9M	—
2023Q3	11	4,470,983	$140.7M	+1
2023Q4	9	5,593,672	$165.1M	-2
2024Q1	9	6,276,061	$157.7M	—
2024Q2	9	6,570,086	$224.6M	—
2024Q3	10	3,875,936	$151.2M	+1
2024Q4	10	3,906,446	$161.5M	—
2025Q1	11	4,683,232	$211.0M	+1
2025Q2	11	4,686,598	$238.5M	—
2025Q3	11	6,059,505	$444.2M	—
2025Q4	15	6,053,178	$478.1M	+4

Who owns MIRM

15 super-investors · 2025Q4

Tracked stake

6.05M

Combined value

$478M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New3Added5Trim7

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	T. Rowe Price	1.42M	$112M	0.0%	Added+137.1K
2	Wellington Management	1.24M	$98M	0.0%	Added+447.1K
3	D.E. Shaw & Co.	948.2K	$75M	0.0%	Added+24.7K
4	Ken Griffin Citadel Advisors	840.2K	$66M	0.0%	Trim−200.3K
5	Renaissance Technologies	439.1K	$35M	0.1%	Trim−74.4K
6	Two Sigma Investments	388.5K	$31M	0.0%	Added+45.4K
7	Norges Bank Norway SWF	263.2K	$21M	0.0%	New+263.2K
8	Izzy Englander Millennium Mgmt	244.3K	$19M	0.0%	Trim−64.8K
9	Steve Cohen Point72	190.6K	$15M	0.0%	Trim−600.0K
10	AQR Capital Management	32.5K	$3M	0.0%	Added+1.1K
11	Ken Fisher Fisher Asset Mgmt	14.1K	$1M	0.0%	New+14.1K	—
12	Ken Griffin Citadel Advisors	12.7K	$1M	0.0%	Trim−200.3K
13	Steve Cohen Point72	8.2K	$648K	0.0%	Trim−600.0K
14	Steve Cohen Point72	8.2K	$648K	0.0%	Trim−600.0K
15	Paul Tudor Jones Tudor Investment	5.2K	$411K	0.0%	New+5.2K

Recent moves

20 transactions

TRIMIzzy Englander (Millennium Mgmt)
−64,758 · 2025Q4
ADDAQR Capital Management
+1,090 · 2025Q4
ADDWellington Management
+447,141 · 2025Q4
TRIMSteve Cohen (Point72)
−600,037 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−200,324 · 2025Q4
ADDT. Rowe Price
+137,087 · 2025Q4
ADDTwo Sigma Investments
+45,416 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+5,205 · 2025Q4
ADDD.E. Shaw & Co.
+24,652 · 2025Q4
TRIMRenaissance Technologies
−74,363 · 2025Q4
NEWNorges Bank (Norway SWF)
+263,175 · 2025Q4
NEWKen Fisher (Fisher Asset Mgmt)
+14,089 · 2025Q4
ADDSteve Cohen (Point72)
+531,809 · 2025Q3
TRIMT. Rowe Price
−133,927 · 2025Q3
ADDD.E. Shaw & Co.
+368,552 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+20,872 · 2025Q3
ADDTwo Sigma Investments
+171,312 · 2025Q3
ADDWellington Management
+672,118 · 2025Q3
TRIMAQR Capital Management
−16,121 · 2025Q3
ADDRenaissance Technologies
+117,100 · 2025Q3

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