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 | |
|---|---|---|---|---|---|---|
1426
Oil States International
OIS
$341M
| $41K | ﹤0.01% |
9,375
-6,500
| -41% | -$28.4K |
|
1427
Precigen
PGEN
$1.13B
| $41K | ﹤0.01% |
26,148
-3,059
| -10% | -$4.8K |
|
|
SOHU
1428
Sohu.com
SOHU
$480M
| $41K | ﹤0.01% |
2,955
-11,633
| -80% | -$161K |
|
|
AD
1429
Array Digital Infrastructure, Inc.
AD
$4.41B
| $41K | ﹤0.01% |
752
-6,045
| -89% | -$330K |
|
1430
Universal Insurance Holdings
UVE
$719M
| $41K | ﹤0.01% |
2,200
-37,448
| -94% | -$698K |
|
1431
American Vanguard Corp
AVD
$160M
| $40K | ﹤0.01% |
4,697
+588
| +14% | +$5.01K |
|
1432
Atlanta Braves Holdings Series A
BATRA
$2.86B
| $40K | ﹤0.01% |
985
+506
| +106% | +$20.5K |
|
1433
Catalyst Pharmaceutical
CPRX
$2.44B
| $40K | ﹤0.01% |
+2,633
| New | +$40K |
|
1434
Clearway Energy Class C
CWEN
$3.39B
| $40K | ﹤0.01% |
1,660
+1,258
| +313% | +$30.3K |
|
1435
Garrett Motion
GTX
$2.64B
| $40K | ﹤0.01% |
+4,700
| New | +$40K |
|
|
HSAI
1436
Hesai Group
HSAI
$771M
| $40K | ﹤0.01% |
9,770
+2,160
| +28% | +$8.84K |
|
1437
iShares Russell Mid-Cap Growth ETF
IWP
$20.6B
| $40K | ﹤0.01% |
364
+193
| +113% | +$21.2K |
|
1438
Microvision
MVIS
$343M
| $40K | ﹤0.01% |
38,080
-52,592
| -58% | -$55.2K |
|
1439
NewMarket
NEU
$7.87B
| $40K | ﹤0.01% |
+79
| New | +$40K |
|
1440
Ryan Specialty Holdings
RYAN
$6.61B
| $40K | ﹤0.01% |
+693
| New | +$40K |
|
1441
SkyWater Technology
SKYT
$509M
| $40K | ﹤0.01% |
5,298
+885
| +20% | +$6.68K |
|
1442
Spear Alpha ETF
SPRX
$94.8M
| $40K | ﹤0.01% |
+1,710
| New | +$40K |
|
|
ALTR
1443
DELISTED
Altair Engineering Inc. Class A Common Stock
ALTR
| $40K | ﹤0.01% |
+415
| New | +$40K |
|
1444
Lincoln Educational Services
LINC
$622M
| $39K | ﹤0.01% |
3,340
-2,266
| -40% | -$26.5K |
|
1445
Sabre
SABR
$738M
| $39K | ﹤0.01% |
14,644
-36,510
| -71% | -$97.2K |
|
|
TGI
1446
DELISTED
Triumph Group
TGI
| $39K | ﹤0.01% |
2,586
-3,733
| -59% | -$56.3K |
|
1447
iShares US Healthcare Providers ETF
IHF
$824M
| $38K | ﹤0.01% |
+738
| New | +$38K |
|
1448
Intrepid Potash
IPI
$389M
| $38K | ﹤0.01% |
1,630
-36,970
| -96% | -$862K |
|
1449
iShares Global Energy ETF
IXC
$1.84B
| $38K | ﹤0.01% |
919
+444
| +93% | +$18.4K |
|
1450
P10
PX
$1.33B
| $38K | ﹤0.01% |
+4,515
| New | +$38K |
|