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 | |
|---|---|---|---|---|---|---|
1676
US Treasury 10 Year Note ETF
UTEN
$225M
| $17K | ﹤0.01% |
398
-199
| -33% | -$8.5K |
|
1677
Global X S&P 500 Covered Call ETF
XYLD
$3.12B
| $17K | ﹤0.01% |
+439
| New | +$17K |
|
1678
Astrana Health
ASTH
$1.38B
| $17K | ﹤0.01% |
+441
| New | +$17K |
|
1679
Alamo Group
ALG
$2.49B
| $16K | ﹤0.01% |
+93
| New | +$16K |
|
1680
Enanta Pharmaceuticals
ENTA
$177M
| $16K | ﹤0.01% |
1,269
+380
| +43% | +$4.79K |
|
1681
89bio
ETNB
$1.2B
| $16K | ﹤0.01% |
+2,055
| New | +$16K |
|
1682
Gilat Satellite Networks
GILT
$619M
| $16K | ﹤0.01% |
+3,790
| New | +$16K |
|
1683
CS Disco
LAW
$357M
| $16K | ﹤0.01% |
2,712
+2,428
| +855% | +$14.3K |
|
1684
Northeast Community Bancorp
NECB
$270M
| $16K | ﹤0.01% |
924
-436
| -32% | -$7.55K |
|
1685
Grupo Aeroportuario Centro Norte
OMAB
$5.41B
| $16K | ﹤0.01% |
+251
| New | +$16K |
|
1686
Paymentus
PAY
$4.1B
| $16K | ﹤0.01% |
+862
| New | +$16K |
|
1687
POET Technologies
POET
$475M
| $16K | ﹤0.01% |
7,885
-15,942
| -67% | -$32.3K |
|
1688
Ryanair
RYAAY
$31.1B
| $16K | ﹤0.01% |
+363
| New | +$16K |
|
1689
Millicom
TIGO
$7.94B
| $16K | ﹤0.01% |
668
+324
| +94% | +$7.76K |
|
1690
Vuzix
VUZI
$172M
| $16K | ﹤0.01% |
12,574
+4,102
| +48% | +$5.22K |
|
1691
AdvisorShares Pure Cannabis ETF
YOLO
$40M
| $16K | ﹤0.01% |
4,807
+2,397
| +99% | +$7.98K |
|
1692
BBB Foods
TBBB
$3B
| $16K | ﹤0.01% |
678
+581
| +599% | +$13.7K |
|
|
GRTS
1693
DELISTED
Gritstone bio, Inc. Common Stock
GRTS
| $16K | ﹤0.01% |
+26,292
| New | +$16K |
|
1694
Arena Group
AREN
$274M
| $15K | ﹤0.01% |
19,782
+1,414
| +8% | +$1.07K |
|
1695
China Automotive Systems, Inc. Ordinary Share
CAAS
$138M
| $15K | ﹤0.01% |
4,464
+494
| +12% | +$1.66K |
|
1696
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$164M
| $15K | ﹤0.01% |
+1,204
| New | +$15K |
|
1697
Champions Oncology
CSBR
$94.2M
| $15K | ﹤0.01% |
3,004
+1,407
| +88% | +$7.03K |
|
1698
CEL-SCI Corp
CVM
$70.5M
| $15K | ﹤0.01% |
457
-588
| -56% | -$19.3K |
|
|
DADA
1699
DELISTED
Dada Nexus
DADA
| $15K | ﹤0.01% |
12,048
-56,870
| -83% | -$70.8K |
|
1700
iMGP DBi Managed Futures Strategy ETF
DBMF
$1.43B
| $15K | ﹤0.01% |
511
+411
| +411% | +$12.1K |
|