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 | |
|---|---|---|---|---|---|---|
1151
Bilibili
BILI
$10.2B
| $68K | ﹤0.01% |
+4,890
| New | +$68K |
|
1152
Invesco DB Agriculture Fund
DBA
$805M
| $68K | ﹤0.01% |
3,814
+1,825
| +92% | +$32.5K |
|
1153
Griffon
GFF
$3.65B
| $68K | ﹤0.01% |
3,868
+3,768
| +3,768% | +$66.2K |
|
1154
Global Net Lease
GNL
$1.81B
| $68K | ﹤0.01% |
3,369
+2,899
| +617% | +$58.5K |
|
1155
iShares S&P GSCI Commodity-Indexed Trust
GSG
$1B
| $68K | ﹤0.01% |
3,842
+3,142
| +449% | +$55.6K |
|
1156
Immersion
IMMR
$222M
| $68K | ﹤0.01% |
4,426
-33,519
| -88% | -$515K |
|
|
FTSI
1157
DELISTED
FTS International, Inc. Common Stock
FTSI
| $68K | ﹤0.01% |
+239
| New | +$68K |
|
|
DBD
1158
DELISTED
Diebold Nixdorf Incorporated
DBD
| $67K | ﹤0.01% |
5,650
-6,295
| -53% | -$74.6K |
|
|
GPOR
1159
DELISTED
Gulfport Energy Corp.
GPOR
| $67K | ﹤0.01% |
+5,409
| New | +$67K |
|
1160
Clean Energy Fuels
CLNE
$561M
| $66K | ﹤0.01% |
+18,101
| New | +$66K |
|
1161
Dynagas LNG Partners
DLNG
$139M
| $66K | ﹤0.01% |
8,148
+3,052
| +60% | +$24.7K |
|
1162
Oppenheimer Holdings
OPY
$763M
| $66K | ﹤0.01% |
2,390
-405
| -14% | -$11.2K |
|
1163
ABM Industries
ABM
$2.82B
| $65K | ﹤0.01% |
2,231
+2,115
| +1,823% | +$61.6K |
|
1164
Sandstorm Gold
SAND
$3.4B
| $65K | ﹤0.01% |
14,498
-11,974
| -45% | -$53.7K |
|
1165
Smith & Wesson
SWBI
$416M
| $65K | ﹤0.01% |
7,088
-54,317
| -88% | -$498K |
|
|
CNCE
1166
DELISTED
Concert Pharmaceuticals, Inc.
CNCE
| $65K | ﹤0.01% |
+3,865
| New | +$65K |
|
|
FIT
1167
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $65K | ﹤0.01% |
10,031
-3,013
| -23% | -$19.5K |
|
1168
AllianceBernstein
AB
$4.17B
| $64K | ﹤0.01% |
+2,250
| New | +$64K |
|
1169
Transact Technologies
TACT
$47M
| $64K | ﹤0.01% |
5,138
-4,120
| -45% | -$51.3K |
|
1170
ProShares UltraPro Dow 30
UDOW
$714M
| $64K | ﹤0.01% |
1,526
-2,218
| -59% | -$93K |
|
|
CSLT
1171
DELISTED
CASTLIGHT HEALTH, INC.
CSLT
| $64K | ﹤0.01% |
+15,210
| New | +$64K |
|
|
GSUM
1172
DELISTED
Gridsum Holding Inc.
GSUM
| $64K | ﹤0.01% |
9,323
-402
| -4% | -$2.76K |
|
|
HYGS
1173
DELISTED
Hydrogenics Corp
HYGS
| $64K | ﹤0.01% |
8,573
-1,107
| -11% | -$8.26K |
|
1174
B&G Foods
BGS
$368M
| $63K | ﹤0.01% |
+2,138
| New | +$63K |
|
1175
DHT Holdings
DHT
$1.94B
| $63K | ﹤0.01% |
13,619
+11,403
| +515% | +$52.7K |
|