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 | |
|---|---|---|---|---|---|---|
|
PF
276
DELISTED
Pinnacle Foods, Inc.
PF
| $1.06M | ﹤0.01% |
+16,314
| New | +$1.06M |
|
|
BFYT
277
DELISTED
Benefytt Technologies, Inc. Class A Common Stock
BFYT
| $1.05M | ﹤0.01% |
+32,525
| New | +$1.05M |
|
278
Markel Group
MKL
$24.2B
| $1.05M | ﹤0.01% |
968
+487
| +101% | +$528K |
|
279
Roku
ROKU
$14.2B
| $1.05M | ﹤0.01% |
+24,617
| New | +$1.05M |
|
280
iShares Russell 2000 Growth ETF
IWO
$12.5B
| $1.04M | ﹤0.01% |
5,111
+1,775
| +53% | +$363K |
|
|
LM
281
DELISTED
Legg Mason, Inc.
LM
| $1.04M | ﹤0.01% |
29,911
+24,361
| +439% | +$845K |
|
|
SAFM
282
DELISTED
Sanderson Farms Inc
SAFM
| $1.04M | ﹤0.01% |
+9,857
| New | +$1.04M |
|
283
Essex Property Trust
ESS
$17.2B
| $1.03M | ﹤0.01% |
4,320
-2,116
| -33% | -$505K |
|
284
Kellanova
K
$27.8B
| $1.03M | ﹤0.01% |
+15,644
| New | +$1.03M |
|
285
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.46B
| $1.03M | ﹤0.01% |
23,036
+12,540
| +119% | +$559K |
|
286
Comerica
CMA
$8.86B
| $1.03M | ﹤0.01% |
+11,277
| New | +$1.03M |
|
287
Ralph Lauren
RL
$18.9B
| $1.02M | ﹤0.01% |
8,143
+4,764
| +141% | +$598K |
|
288
Yum! Brands
YUM
$40.1B
| $1.02M | ﹤0.01% |
13,067
+8,572
| +191% | +$670K |
|
|
SVU
289
DELISTED
SUPERVALU Inc.
SVU
| $1.02M | ﹤0.01% |
49,851
-511
| -1% | -$10.5K |
|
290
Advance Auto Parts
AAP
$3.59B
| $1.01M | ﹤0.01% |
+7,452
| New | +$1.01M |
|
291
Invesco CurrencyShares Euro Currency Trust
FXE
$530M
| $1.01M | ﹤0.01% |
9,007
-20,727
| -70% | -$2.32M |
|
292
AES
AES
$9.14B
| $995K | ﹤0.01% |
74,220
+63,372
| +584% | +$850K |
|
293
CNX Resources
CNX
$4.14B
| $994K | ﹤0.01% |
55,938
+43,343
| +344% | +$770K |
|
294
Melco Resorts & Entertainment
MLCO
$3.8B
| $993K | ﹤0.01% |
+35,491
| New | +$993K |
|
|
CRC
295
DELISTED
California Resources Corporation
CRC
| $991K | ﹤0.01% |
21,809
+16,908
| +345% | +$768K |
|
296
Box
BOX
$4.72B
| $989K | ﹤0.01% |
39,610
+23,153
| +141% | +$578K |
|
297
TSMC
TSM
$1.25T
| $985K | ﹤0.01% |
26,968
+10,603
| +65% | +$387K |
|
298
PayPal
PYPL
$65.3B
| $981K | ﹤0.01% |
11,788
-10,879
| -48% | -$905K |
|
299
ProShares Ultra QQQ
QLD
$9.04B
| $978K | ﹤0.01% |
45,288
-36,400
| -45% | -$786K |
|
300
Braskem
BAK
$1.39B
| $976K | ﹤0.01% |
37,561
+36,943
| +5,978% | +$960K |
|