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 | |
|---|---|---|---|---|---|---|
751
First Trust NASDAQ Cybersecurity ETF
CIBR
$10.7B
| $607K | ﹤0.01% |
12,975
+2,766
| +27% | +$129K |
|
752
Equifax
EFX
$30.8B
| $607K | ﹤0.01% |
2,520
| – | – |
|
|
CDK
753
DELISTED
CDK Global, Inc.
CDK
| $607K | ﹤0.01% |
12,122
+5,118
| +73% | +$256K |
|
754
Riot Platforms
RIOT
$5.33B
| $606K | ﹤0.01% |
16,741
| – | – |
|
755
Sundial Growers
SNDL
$615M
| $606K | ﹤0.01% |
65,900
+1,665
| +3% | +$15.3K |
|
756
iShares Global Healthcare ETF
IXJ
$3.86B
| $603K | ﹤0.01% |
7,209
-100
| -1% | -$8.37K |
|
|
GSKY
757
DELISTED
GreenSky, Inc. Class A Common Stock
GSKY
| $603K | ﹤0.01% |
108,823
| – | – |
|
758
Adient
ADNT
$1.97B
| $602K | ﹤0.01% |
13,341
| – | – |
|
759
PBF Energy
PBF
$3.42B
| $600K | ﹤0.01% |
39,618
-513
| -1% | -$7.77K |
|
|
VLDR
760
DELISTED
Velodyne Lidar, Inc. Common Stock
VLDR
| $599K | ﹤0.01% |
57,963
+8,960
| +18% | +$92.6K |
|
761
Roundhill Sports Betting & iGaming ETF
BETZ
$84.8M
| $596K | ﹤0.01% |
19,605
+100
| +0.5% | +$3.04K |
|
762
Target
TGT
$41.3B
| $596K | ﹤0.01% |
2,452
-627
| -20% | -$152K |
|
763
Clover Health Investments
CLOV
$1.45B
| $595K | ﹤0.01% |
48,277
-107,521
| -69% | -$1.33M |
|
|
YALA
764
Yalla Group
YALA
$1.21B
| $595K | ﹤0.01% |
31,581
| – | – |
|
765
Lincoln Electric
LECO
$13.2B
| $593K | ﹤0.01% |
4,487
| – | – |
|
766
Mohawk Industries
MHK
$8.46B
| $592K | ﹤0.01% |
3,002
+491
| +20% | +$96.8K |
|
767
State Street
STT
$32B
| $589K | ﹤0.01% |
7,029
+100
| +1% | +$8.38K |
|
768
Xcel Energy
XEL
$42.4B
| $586K | ﹤0.01% |
8,752
-300
| -3% | -$20.1K |
|
769
Vanguard Real Estate ETF
VNQ
$34.4B
| $585K | ﹤0.01% |
5,726
| – | – |
|
|
HZON
770
DELISTED
Horizon Acquisition Corporation II
HZON
| $585K | ﹤0.01% |
59,861
| – | – |
|
771
TD Synnex
SNX
$12.4B
| $584K | ﹤0.01% |
4,791
-1,000
| -17% | -$122K |
|
772
Unilever
UL
$154B
| $583K | ﹤0.01% |
9,921
+600
| +6% | +$35.3K |
|
773
Atossa Therapeutics
ATOS
$104M
| $582K | ﹤0.01% |
91,024
-50,523
| -36% | -$323K |
|
774
AbCellera Biologics
ABCL
$1.23B
| $581K | ﹤0.01% |
28,282
+960
| +4% | +$19.7K |
|
775
Lennar Class A
LEN
$35.6B
| $581K | ﹤0.01% |
5,906
-904
| -13% | -$88.9K |
|