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 |
Apple
AAPL
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$162M
| $104K | ﹤0.01% |
2,195
-12,359
| -85% | -$586K |
|
1002
iShares US Pharmaceuticals ETF
IHE
$579M
| $103K | ﹤0.01% |
+2,049
| New | +$103K |
|
1003
Spok Holdings
SPOK
$356M
| $103K | ﹤0.01% |
6,870
-4,091
| -37% | -$61.3K |
|
|
CLD
1004
DELISTED
Cloud Peak Energy Inc
CLD
| $103K | ﹤0.01% |
+29,523
| New | +$103K |
|
1005
First Horizon
FHN
$11.5B
| $102K | ﹤0.01% |
5,736
-14,435
| -72% | -$257K |
|
1006
Globant
GLOB
$2.52B
| $102K | ﹤0.01% |
+1,804
| New | +$102K |
|
1007
iShares Gold Trust
IAU
$53.5B
| $102K | ﹤0.01% |
4,258
+200
| +5% | +$4.79K |
|
1008
TEGNA Inc
TGNA
$3.37B
| $102K | ﹤0.01% |
9,444
+7,785
| +469% | +$84.1K |
|
|
SREV
1009
DELISTED
ServiceSource International, Inc.
SREV
| $102K | ﹤0.01% |
26,066
-21,432
| -45% | -$83.9K |
|
1010
AtriCure
ATRC
$1.75B
| $101K | ﹤0.01% |
3,763
+3,653
| +3,321% | +$98K |
|
1011
Vuzix
VUZI
$176M
| $101K | ﹤0.01% |
+13,644
| New | +$101K |
|
|
AMJ
1012
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
| $101K | ﹤0.01% |
3,819
+2,579
| +208% | +$68.2K |
|
|
BOJA
1013
DELISTED
Bojangles', Inc. Common Stock
BOJA
| $101K | ﹤0.01% |
7,056
+6,868
| +3,653% | +$98.3K |
|
1014
Gray Television
GTN
$579M
| $100K | ﹤0.01% |
+6,335
| New | +$100K |
|
1015
Stride
LRN
$6.89B
| $100K | ﹤0.01% |
6,128
+4,031
| +192% | +$65.8K |
|
1016
Gibraltar Industries
ROCK
$1.79B
| $100K | ﹤0.01% |
2,669
-1,576
| -37% | -$59K |
|
1017
Textron
TXT
$14.4B
| $100K | ﹤0.01% |
+1,528
| New | +$100K |
|
1018
Vanguard Energy ETF
VDE
$7.34B
| $100K | ﹤0.01% |
956
+340
| +55% | +$35.6K |
|
|
LPT
1019
DELISTED
Liberty Property Trust
LPT
| $100K | ﹤0.01% |
+2,256
| New | +$100K |
|
|
MITL
1020
DELISTED
Mitel Networks Corporation
MITL
| $100K | ﹤0.01% |
9,141
+1,097
| +14% | +$12K |
|
1021
Dorchester Minerals
DMLP
$1.2B
| $99K | ﹤0.01% |
+4,818
| New | +$99K |
|
1022
Pembina Pipeline
PBA
$22.5B
| $98K | ﹤0.01% |
+2,845
| New | +$98K |
|
|
GTS
1023
DELISTED
Triple-S Management Corporation
GTS
| $98K | ﹤0.01% |
2,661
+863
| +48% | +$31.8K |
|
|
SFLY
1024
DELISTED
Shutterfly, Inc.
SFLY
| $98K | ﹤0.01% |
+1,091
| New | +$98K |
|
|
ADAP
1025
Adaptimmune Therapeutics
ADAP
$13.5M
| $97K | ﹤0.01% |
8,208
+6,086
| +287% | +$71.9K |
|