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 | |
|---|---|---|---|---|---|---|
1301
Wave Life Sciences
WVE
$1.11B
| $60K | ﹤0.01% |
12,211
+190
| +2% | +$934 |
|
|
LGF.B
1302
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $60K | ﹤0.01% |
7,068
+6,003
| +564% | +$51K |
|
1303
Old National Bancorp
ONB
$8.88B
| $59K | ﹤0.01% |
+3,444
| New | +$59K |
|
1304
Orion Group Holdings
ORN
$299M
| $59K | ﹤0.01% |
6,214
-208
| -3% | -$1.98K |
|
1305
Outdoor Holding Company Common Stock
POWW
$178M
| $59K | ﹤0.01% |
35,641
+1,324
| +4% | +$2.19K |
|
1306
Twist Bioscience
TWST
$1.53B
| $59K | ﹤0.01% |
+1,200
| New | +$59K |
|
1307
VistaGen Therapeutics
VTGN
$104M
| $59K | ﹤0.01% |
+17,107
| New | +$59K |
|
|
VTNR
1308
DELISTED
Vertex Energy, Inc
VTNR
| $59K | ﹤0.01% |
63,491
-45,883
| -42% | -$42.6K |
|
1309
Allot
ALLT
$426M
| $58K | ﹤0.01% |
25,258
-82,609
| -77% | -$190K |
|
1310
Infosys
INFY
$70.3B
| $58K | ﹤0.01% |
+3,158
| New | +$58K |
|
|
MESO
1311
Mesoblast
MESO
$1.9B
| $58K | ﹤0.01% |
+8,652
| New | +$58K |
|
1312
VanEck Morningstar Wide Moat ETF
MOAT
$12.6B
| $58K | ﹤0.01% |
676
+385
| +132% | +$33K |
|
1313
Champion Homes, Inc.
SKY
$4.22B
| $58K | ﹤0.01% |
858
+794
| +1,241% | +$53.7K |
|
1314
Zegna
ZGN
$2.22B
| $58K | ﹤0.01% |
+4,916
| New | +$58K |
|
1315
Aterian
ATER
$9.73M
| $57K | ﹤0.01% |
20,531
+19,167
| +1,405% | +$53.2K |
|
1316
CSG Systems International
CSGS
$1.86B
| $57K | ﹤0.01% |
1,405
+615
| +78% | +$25K |
|
|
DQ
1317
Daqo New Energy
DQ
$1.73B
| $57K | ﹤0.01% |
+3,914
| New | +$57K |
|
1318
DXP Enterprises
DXPE
$1.85B
| $57K | ﹤0.01% |
1,256
-7,796
| -86% | -$354K |
|
|
PBT
1319
Permian Basin Royalty Trust
PBT
$825M
| $57K | ﹤0.01% |
5,077
-8,157
| -62% | -$91.6K |
|
1320
Seanergy Maritime Holdings
SHIP
$181M
| $57K | ﹤0.01% |
5,844
-2,508
| -30% | -$24.5K |
|
1321
ProShares UltraShort Real Estate
SRS
$21.8M
| $57K | ﹤0.01% |
950
-568
| -37% | -$34.1K |
|
1322
Bandwidth Inc
BAND
$495M
| $56K | ﹤0.01% |
+3,374
| New | +$56K |
|
1323
Cintas
CTAS
$81.6B
| $56K | ﹤0.01% |
+320
| New | +$56K |
|
1324
Seres Therapeutics
MCRB
$139M
| $56K | ﹤0.01% |
3,897
+203
| +5% | +$2.92K |
|
1325
NorthWestern Energy
NWE
$3.51B
| $56K | ﹤0.01% |
+1,121
| New | +$56K |
|