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 |
NVIDIA
NVDA
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1551
Lightbridge
LTBR
$362M
| $25K | ﹤0.01% |
7,435
+4,611
| +163% | +$15.5K |
|
1552
Microvast
MVST
$1.06B
| $25K | ﹤0.01% |
56,119
-16,948
| -23% | -$7.55K |
|
1553
U-Haul Holding Co
UHAL
$10.8B
| $25K | ﹤0.01% |
406
+139
| +52% | +$8.56K |
|
|
NAGE
1554
Niagen Bioscience, Inc. Common Stock
NAGE
$766M
| $25K | ﹤0.01% |
+9,304
| New | +$25K |
|
|
AMRN
1555
Amarin Corp
AMRN
$310M
| $24K | ﹤0.01% |
1,763
+1,734
| +5,979% | +$23.6K |
|
1556
Artivion
AORT
$1.92B
| $24K | ﹤0.01% |
+940
| New | +$24K |
|
1557
Hyliion Holdings
HYLN
$284M
| $24K | ﹤0.01% |
15,417
-63,702
| -81% | -$99.2K |
|
1558
Inovio Pharmaceuticals
INO
$126M
| $24K | ﹤0.01% |
3,054
-3,639
| -54% | -$28.6K |
|
|
IRS
1559
IRSA Inversiones y Representaciones
IRS
$906M
| $24K | ﹤0.01% |
2,820
+1,315
| +87% | +$11.2K |
|
1560
Nerdy
NRDY
$158M
| $24K | ﹤0.01% |
14,709
+5,761
| +64% | +$9.4K |
|
1561
ProShares Short Real Estate
REK
$11.3M
| $24K | ﹤0.01% |
1,273
-26
| -2% | -$490 |
|
1562
Riley Exploration Permian
REPX
$608M
| $24K | ﹤0.01% |
+855
| New | +$24K |
|
1563
Stitch Fix
SFIX
$714M
| $24K | ﹤0.01% |
5,956
+820
| +16% | +$3.3K |
|
1564
T-Rex 2X Inverse Tesla Daily Target ETF
TSLZ
$52.7M
| $24K | ﹤0.01% |
1,016
+629
| +163% | +$14.9K |
|
1565
WisdomTree Artificial Intelligence and Innovation Fund
WTAI
$297M
| $24K | ﹤0.01% |
+1,153
| New | +$24K |
|
1566
Zeekr
ZK
$7.45B
| $24K | ﹤0.01% |
+1,293
| New | +$24K |
|
1567
Cadiz
CDZI
$322M
| $23K | ﹤0.01% |
7,681
+328
| +4% | +$982 |
|
1568
Distribution Solutions Group
DSGR
$1.44B
| $23K | ﹤0.01% |
769
+610
| +384% | +$18.2K |
|
1569
Global Partners
GLP
$1.77B
| $23K | ﹤0.01% |
506
-296
| -37% | -$13.5K |
|
|
LGO
1570
Largo
LGO
$104M
| $23K | ﹤0.01% |
12,928
+7,462
| +137% | +$13.3K |
|
1571
LivePerson
LPSN
$86M
| $23K | ﹤0.01% |
40,117
-1,241
| -3% | -$711 |
|
1572
ManpowerGroup
MAN
$1.78B
| $23K | ﹤0.01% |
337
-417
| -55% | -$28.5K |
|
|
PTN
1573
DELISTED
Palatin Technologies
PTN
| $23K | ﹤0.01% |
12,050
-3,470
| -22% | -$6.62K |
|
1574
Suzano
SUZ
$11.7B
| $23K | ﹤0.01% |
+2,325
| New | +$23K |
|
1575
SPDR Bloomberg 1-10 Year TIPS ETF
TIPX
$1.74B
| $23K | ﹤0.01% |
1,262
-174
| -12% | -$3.17K |
|