Ticker · CUSIP 573134103

MRT

MARTI TECHNOLOGIES INC

···Share

Holders (tracked)

Combined shares

113,618

Combined value

$269.3K

Last close

$2.20

Quarter

2025Q4

Price is -7.2% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$2.20-0.87 (-28.43%)H $3.46 · L $2.00 · Avg Vol 67K

Position opened

Tracked holders · last 8 quarters

+1 vs previous quarter over the last 5.

SEC event timeline

5 events

Ken Griffin (Citadel Advisors) opened position2026-02-17
+17,235 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+6,816 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+7,444 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+5,731 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+1,156 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for MRT →

Follow-the-investor returns

If you'd copied each holder of MRT…

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)	2025Q2	$2.59	-15.2%	$51K
Ken Griffin (Citadel Advisors)	2025Q2	$2.82	-22.1%	$38K
Renaissance Technologies	2024Q4	$3.04	-27.7%	$161K

Who moved on this name in 2025Q4

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

New positions1

Ken Griffin (Citadel Advisors)
+17,235
$41K

Added to2

Renaissance Technologies
+7,444
$18K
Izzy Englander (Millennium Mgmt)
+6,816
$16K

Trimmed0

—

Exited0

—

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2024Q4	1	37,300	$126K	—
2025Q1	1	19,088	$59K	—
2025Q2	3	87,082	$264K	+2
2025Q3	2	82,123	$168K	-1
2025Q4	3	113,618	$269K	+1

Who owns MRT

3 super-investors · 2025Q4

Tracked stake

113.6K

Combined value

$269K

% of shares outstanding

—

shares-out unknown

Quarter action mix

New1Added2

#	Manager	Shares	Value	% of book	Last action
1	Renaissance Technologies	73.1K	$173K	0.0%	Added+7.4K
2	Izzy Englander Millennium Mgmt	23.3K	$55K	0.0%	Added+6.8K
3	Ken Griffin Citadel Advisors	17.2K	$41K	0.0%	New+17.2K

Recent moves

9 transactions

ADDIzzy Englander (Millennium Mgmt)
+6,816 · 2025Q4
NEWKen Griffin (Citadel Advisors)
+17,235 · 2025Q4
ADDRenaissance Technologies
+7,444 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+5,731 · 2025Q3
ADDRenaissance Technologies
+1,156 · 2025Q3
NEWIzzy Englander (Millennium Mgmt)
+10,736 · 2025Q2
ADDRenaissance Technologies
+45,412 · 2025Q2
TRIMRenaissance Technologies
−18,212 · 2025Q1
NEWRenaissance Technologies
+37,300 · 2024Q4

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