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 | |
|---|---|---|---|---|---|---|
|
PENG
601
Penguin Solutions, Inc. Ordinary Shares
PENG
$1.34B
| $554K | ﹤0.01% |
24,238
+12,745
| +111% | +$291K |
|
602
O-I Glass
OI
$1.95B
| $552K | ﹤0.01% |
+49,610
| New | +$552K |
|
603
Warby Parker
WRBY
$3.29B
| $552K | ﹤0.01% |
34,392
+11,273
| +49% | +$181K |
|
604
Invesco CurrencyShares Canadian Dollar Trust
FXC
$91.6M
| $551K | ﹤0.01% |
+7,704
| New | +$551K |
|
605
Stanley Black & Decker
SWK
$11.9B
| $547K | ﹤0.01% |
6,849
-34,043
| -83% | -$2.72M |
|
606
MDU Resources
MDU
$3.36B
| $544K | ﹤0.01% |
39,188
+27,159
| +226% | +$377K |
|
607
Teucrium Wheat Fund
WEAT
$116M
| $543K | ﹤0.01% |
102,444
+55,807
| +120% | +$296K |
|
|
DM
608
DELISTED
Desktop Metal, Inc.
DM
| $543K | ﹤0.01% |
131,524
+103,002
| +361% | +$425K |
|
609
Digimarc
DMRC
$203M
| $540K | ﹤0.01% |
17,424
+16,853
| +2,951% | +$522K |
|
610
Kodak
KODK
$464M
| $540K | ﹤0.01% |
100,499
-11,228
| -10% | -$60.3K |
|
611
iShares Biotechnology ETF
IBB
$5.64B
| $535K | ﹤0.01% |
3,901
-1,271
| -25% | -$174K |
|
612
Ameren
AEE
$26.8B
| $533K | ﹤0.01% |
7,505
+184
| +3% | +$13.1K |
|
613
Banc of California
BANC
$2.65B
| $531K | ﹤0.01% |
41,607
-3,979
| -9% | -$50.8K |
|
614
CSX Corp
CSX
$59.8B
| $525K | ﹤0.01% |
+15,703
| New | +$525K |
|
615
Evolent Health
EVH
$1.07B
| $523K | ﹤0.01% |
+27,364
| New | +$523K |
|
616
Simply Good Foods
SMPL
$2.73B
| $523K | ﹤0.01% |
+14,490
| New | +$523K |
|
617
SPDR Portfolio Mortgage Backed Bond ETF
SPMB
$6.37B
| $520K | ﹤0.01% |
24,109
+10,389
| +76% | +$224K |
|
618
Direxion Daily Regional Banks Bull 3X Shares
DPST
$718M
| $518K | ﹤0.01% |
7,387
+4,076
| +123% | +$286K |
|
619
Direxion Daily Financial Bear 3x Shares
FAZ
$113M
| $513K | ﹤0.01% |
48,290
+34,012
| +238% | +$361K |
|
620
Urban Outfitters
URBN
$6.33B
| $512K | ﹤0.01% |
12,489
-17,502
| -58% | -$718K |
|
621
SPDR Bloomberg High Yield Bond ETF
JNK
$8.1B
| $506K | ﹤0.01% |
5,371
+142
| +3% | +$13.4K |
|
622
Alamos Gold
AGI
$13.9B
| $505K | ﹤0.01% |
32,265
+27,985
| +654% | +$438K |
|
623
VanEck JP Morgan EM Local Currency Bond ETF
EMLC
$3.7B
| $505K | ﹤0.01% |
21,240
+8,745
| +70% | +$208K |
|
624
First Trust Dow Jones Internet Index Fund ETF
FDN
$7.91B
| $505K | ﹤0.01% |
2,469
+2,434
| +6,954% | +$498K |
|
625
ProShares Ultra Bloomberg Natural Gas
BOIL
$128M
| $504K | ﹤0.01% |
+6,438
| New | +$504K |
|