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 |
Advanced Micro Devices
AMD
|
$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
$10.1M |
| 3 |
NIO
NIO
|
$7.66M |
| 4 |
Alibaba
BABA
|
$7.54M |
| 5 |
Micron Technology
MU
|
$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$101M |
| 2 |
SPDR Gold Trust
GLD
|
$15.2M |
| 3 |
Amazon
AMZN
|
$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
501
Hydrofarm Holdings
HYFM
$15.4M
| $1.09M | ﹤0.01% |
1,932
+90
| +5% | +$50.9K |
|
|
WBT
502
DELISTED
Welbilt, Inc.
WBT
| $1.09M | ﹤0.01% |
46,611
-1,389
| -3% | -$32.5K |
|
|
KL
503
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $1.09M | ﹤0.01% |
28,296
-1,094
| -4% | -$42K |
|
504
Kellanova
K
$27.8B
| $1.08M | ﹤0.01% |
18,059
-971
| -5% | -$58.3K |
|
505
Protolabs
PRLB
$1.19B
| $1.08M | ﹤0.01% |
11,695
-13
| -0.1% | -$1.2K |
|
506
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$665M
| $1.08M | ﹤0.01% |
793
-28
| -3% | -$38.2K |
|
507
Equity Residential
EQR
$25.5B
| $1.08M | ﹤0.01% |
13,839
| – | – |
|
508
Inseego
INSG
$199M
| $1.08M | ﹤0.01% |
11,141
+1,760
| +19% | +$170K |
|
509
Five Below
FIVE
$8.46B
| $1.07M | ﹤0.01% |
5,453
| – | – |
|
510
CenterPoint Energy
CNP
$24.7B
| $1.07M | ﹤0.01% |
43,188
-114
| -0.3% | -$2.82K |
|
511
ZIM Integrated Shipping Services
ZIM
$1.62B
| $1.07M | ﹤0.01% |
25,157
-1,821
| -7% | -$77.2K |
|
|
RIDE
512
DELISTED
Lordstown Motors Corp. Class A Common Stock
RIDE
| $1.06M | ﹤0.01% |
6,836
+6
| +0.1% | +$931 |
|
513
Vanguard Small-Cap Growth ETF
VBK
$20.4B
| $1.06M | ﹤0.01% |
3,645
| – | – |
|
514
Olin
OLN
$2.9B
| $1.06M | ﹤0.01% |
22,760
-637
| -3% | -$29.6K |
|
|
NVRO
515
DELISTED
NEVRO CORP.
NVRO
| $1.06M | ﹤0.01% |
6,365
-189
| -3% | -$31.4K |
|
516
Sabesp
SBS
$15.8B
| $1.06M | ﹤0.01% |
147,792
-1,000
| -0.7% | -$7.15K |
|
517
iShares MSCI Italy ETF
EWI
$708M
| $1.05M | ﹤0.01% |
32,371
| – | – |
|
518
Helmerich & Payne
HP
$2.01B
| $1.05M | ﹤0.01% |
31,518
-100
| -0.3% | -$3.34K |
|
519
Amgen
AMGN
$153B
| $1.04M | ﹤0.01% |
4,231
-2,535
| -37% | -$626K |
|
520
Papa John's
PZZA
$1.58B
| $1.04M | ﹤0.01% |
9,994
-300
| -3% | -$31.2K |
|
521
Navios Maritime Partners
NMM
$1.42B
| $1.04M | ﹤0.01% |
37,492
+600
| +2% | +$16.6K |
|
522
Hecla Mining
HL
$6.04B
| $1.04M | ﹤0.01% |
139,879
+13,974
| +11% | +$103K |
|
523
BioMarin Pharmaceuticals
BMRN
$11.1B
| $1.03M | ﹤0.01% |
12,314
-3,614
| -23% | -$303K |
|
524
Microchip Technology
MCHP
$35.6B
| $1.03M | ﹤0.01% |
13,998
-812
| -5% | -$59.9K |
|
|
PSTH
525
DELISTED
Pershing Square Tontine Holdings, Ltd.
PSTH
| $1.03M | ﹤0.01% |
45,912
-12,384
| -21% | -$279K |
|