Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Tesla
TSLA
|
+$27.1M |
| 2 |
Netflix
NFLX
|
+$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
+$18.3M |
| 5 |
Alibaba
BABA
|
+$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
+$71.9M |
| 2 |
Micron Technology
MU
|
+$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$26.3M |
| 4 |
Boeing
BA
|
+$21M |
| 5 |
Citigroup
C
|
+$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SREV
676
DELISTED
ServiceSource International, Inc.
SREV
| $180K | 0.01% |
47,498
-7,573
| -14% | -$28.7K |
|
677
Mercado Libre
MELI
$119B
| $178K | 0.01% |
500
-5,323
| -91% | -$1.89M |
|
678
Ryman Hospitality Properties
RHP
$6.34B
| $178K | 0.01% |
2,299
+1,756
| +323% | +$136K |
|
679
Strategic Education
STRA
$1.94B
| $177K | 0.01% |
1,760
+1,007
| +134% | +$101K |
|
680
Caesarstone
CSTE
$50.5M
| $176K | 0.01% |
+8,993
| New | +$176K |
|
681
Gentex
GNTX
$6.15B
| $176K | 0.01% |
+7,666
| New | +$176K |
|
682
Huntington Bancshares
HBAN
$25.8B
| $176K | 0.01% |
11,688
-1,838
| -14% | -$27.7K |
|
683
International Paper
IP
$24.5B
| $176K | 0.01% |
+3,488
| New | +$176K |
|
684
Mativ Holdings
MATV
$666M
| $176K | 0.01% |
+4,518
| New | +$176K |
|
685
Black Hills Corp
BKH
$4.28B
| $175K | 0.01% |
3,228
+281
| +10% | +$15.2K |
|
|
BMS
686
DELISTED
Bemis
BMS
| $175K | 0.01% |
4,033
-22,274
| -85% | -$967K |
|
687
VirnetX
VHC
$74.6M
| $174K | 0.01% |
2,210
+478
| +28% | +$37.6K |
|
|
NS
688
DELISTED
NuStar Energy L.P.
NS
| $174K | 0.01% |
8,567
-9,755
| -53% | -$198K |
|
|
HZNP
689
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $174K | 0.01% |
+12,300
| New | +$174K |
|
690
Arrow Electronics
ARW
$6.54B
| $173K | 0.01% |
2,250
+780
| +53% | +$60K |
|
691
Equinix
EQIX
$76.4B
| $173K | 0.01% |
+415
| New | +$173K |
|
692
Loews
L
$19.9B
| $173K | 0.01% |
+3,482
| New | +$173K |
|
693
Anika Therapeutics
ANIK
$121M
| $172K | 0.01% |
+3,468
| New | +$172K |
|
694
Oceaneering
OII
$2.45B
| $172K | 0.01% |
9,325
+8,417
| +927% | +$155K |
|
|
LMRK
695
DELISTED
Landmark Infrastructure Partners LP Common Units
LMRK
| $172K | 0.01% |
+10,375
| New | +$172K |
|
696
Gildan
GIL
$8.08B
| $171K | 0.01% |
+5,935
| New | +$171K |
|
|
NUAN
697
DELISTED
Nuance Communications, Inc.
NUAN
| $171K | 0.01% |
+12,574
| New | +$171K |
|
|
RTEC
698
DELISTED
Rudolph Technologies Inc
RTEC
| $171K | 0.01% |
6,192
+4,879
| +372% | +$135K |
|
699
Camping World
CWH
$1.06B
| $170K | 0.01% |
+5,274
| New | +$170K |
|
700
Live Nation Entertainment
LYV
$39.6B
| $170K | 0.01% |
4,040
-16,225
| -80% | -$683K |
|