Ticker · CUSIP 853666105

SMP

STANDARD MTR PRODS INC

Consumer Cyclical·Auto Parts

···Share

Holders (tracked)

Combined shares

1,138,370

Combined value

$41.95M

Last close

$37.87

Quarter

2025Q4

Price is +2.8% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$37.87+14.85 (+64.48%)H $44.81 · L $22.77 · Avg Vol 155K

Tracked holders · last 8 quarters

Flat over the last 8 quarters.

SEC event timeline

14 events

Ken Griffin (Citadel Advisors) trimmed2026-02-17
−144,584 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+30,125 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+33,761 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+1,867 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+1,749 shares · 2025Q4
Position
AQR Capital Management exited2026-02-17
−4,912 shares · 2025Q4
Position
Renaissance Technologies opened position2026-02-12
+38,303 shares · 2025Q4
Position
Mario Gabelli (GAMCO) added2026-02-05
+39,710 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−21,128 shares · 2025Q3
Position
Two Sigma Investments trimmed2025-11-14
−1,648 shares · 2025Q3
Position
AQR Capital Management opened position2025-11-14
+4,912 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−32,319 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+459 shares · 2025Q3
Position
Mario Gabelli (GAMCO) trimmed2025-11-12
−16,137 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for SMP →

Follow-the-investor returns

If you'd copied each holder of SMP…

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
Izzy Englander (Millennium Mgmt)	2016Q1	$27.80	+36.2%	$425K
Ken Griffin (Citadel Advisors)	2016Q1	$30.92	+22.5%	$251K
Mario Gabelli (GAMCO)	2016Q1	$33.08	+14.5%	$37.1M
D.E. Shaw & Co.	2016Q1	$35.10	+7.9%	$1.4M
Two Sigma Investments	2016Q1	$36.85	+2.8%	$1.5M
T. Rowe Price	2016Q1	$36.99	+2.4%	$953K
Renaissance Technologies	2016Q1	$38.74	-2.2%	$1.5M

Who moved on this name in 2025Q4

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

New positions1

Renaissance Technologies
+38,303
$1.4M

Added to5

Mario Gabelli (GAMCO)
+39,710
$1.5M
Two Sigma Investments
+33,761
$1.2M
D.E. Shaw & Co.
+30,125
$1.1M
Izzy Englander (Millennium Mgmt)
+1,867
$69K
T. Rowe Price
+1,749
$64

Trimmed1

Ken Griffin (Citadel Advisors)
−144,584
$5.3M

Exited1

AQR Capital Management
−4,912
$201K

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	10	3,775,511	$162.9M	—
2022Q2	9	3,839,617	$172.7M	-1
2022Q3	11	3,901,091	$126.8M	+2
2022Q4	12	4,050,005	$140.9M	+1
2023Q1	12	4,311,785	$159.1M	—
2023Q2	11	4,250,634	$159.5M	-1
2023Q3	10	4,322,253	$145.3M	-1
2023Q4	10	4,138,686	$164.8M	—
2024Q1	6	3,885,675	$130.4M	-4
2024Q2	7	3,906,137	$108.3M	+1
2024Q3	5	1,034,102	$34.3M	-2
2024Q4	5	896,881	$27.8M	—
2025Q1	7	1,140,531	$28.4M	+2
2025Q2	6	1,257,132	$38.6M	-1
2025Q3	7	1,142,351	$46.6M	+1
2025Q4	7	1,138,370	$41.9M	—

Who owns SMP

7 super-investors · 2025Q4

Tracked stake

1.14M

Combined value

$42M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New1Added5Trim1

#	Manager	Shares	Value	% of book	Last action
1	Mario Gabelli GAMCO	980.3K	$36M	0.3%	Added+39.7K
2	Two Sigma Investments	40.2K	$1M	0.0%	Added+33.8K
3	Renaissance Technologies	38.3K	$1M	0.0%	New+38.3K
4	D.E. Shaw & Co.	36.6K	$1M	0.0%	Added+30.1K
5	T. Rowe Price	25.2K	$927K	0.0%	Added+1.7K
6	Izzy Englander Millennium Mgmt	11.2K	$414K	0.0%	Added+1.9K
7	Ken Griffin Citadel Advisors	6.6K	$245K	0.0%	Trim−144.6K

Recent moves

20 transactions

ADDT. Rowe Price
+1,749 · 2025Q4
SOLDAQR Capital Management
−4,912 · 2025Q4
ADDTwo Sigma Investments
+33,761 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−144,584 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+1,867 · 2025Q4
ADDD.E. Shaw & Co.
+30,125 · 2025Q4
NEWRenaissance Technologies
+38,303 · 2025Q4
ADDMario Gabelli (GAMCO)
+39,710 · 2025Q4
TRIMTwo Sigma Investments
−1,648 · 2025Q3
NEWAQR Capital Management
+4,912 · 2025Q3
ADDT. Rowe Price
+459 · 2025Q3
TRIMD.E. Shaw & Co.
−32,319 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−21,128 · 2025Q3
TRIMMario Gabelli (GAMCO)
−16,137 · 2025Q3
NEWTwo Sigma Investments
+8,048 · 2025Q2
TRIMD.E. Shaw & Co.
−53,811 · 2025Q2
ADDT. Rowe Price
+1,388 · 2025Q2
TRIMIzzy Englander (Millennium Mgmt)
−40,545 · 2025Q2
SOLDAQR Capital Management
−42,200 · 2025Q2
SOLDRenaissance Technologies
−9,100 · 2025Q2

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