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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Deckers Outdoor
DECK
$17.9B
| $907K | ﹤0.01% |
32,250
+18,996
| +143% | +$534K |
|
302
LyondellBasell Industries
LYB
$17.7B
| $907K | ﹤0.01% |
9,607
+5,852
| +156% | +$552K |
|
303
iShares MSCI Hong Kong ETF
EWH
$712M
| $906K | ﹤0.01% |
+37,258
| New | +$906K |
|
304
Harley-Davidson
HOG
$3.67B
| $899K | ﹤0.01% |
24,176
+15,665
| +184% | +$583K |
|
305
Guardant Health
GH
$7.5B
| $898K | ﹤0.01% |
+11,504
| New | +$898K |
|
|
ZGNX
306
DELISTED
Zogenix, Inc.
ZGNX
| $895K | ﹤0.01% |
17,179
-25,278
| -60% | -$1.32M |
|
307
Energy Transfer Partners
ET
$59.7B
| $891K | ﹤0.01% |
69,463
+31,098
| +81% | +$399K |
|
308
Baker Hughes
BKR
$44.9B
| $882K | ﹤0.01% |
+34,422
| New | +$882K |
|
309
Nutrien
NTR
$27.4B
| $876K | ﹤0.01% |
18,291
+11,325
| +163% | +$542K |
|
310
Crane NXT
CXT
$3.51B
| $870K | ﹤0.01% |
29,000
+28,430
| +4,988% | +$853K |
|
311
NRG Energy
NRG
$28.6B
| $868K | ﹤0.01% |
+21,861
| New | +$868K |
|
|
CZR
312
DELISTED
Caesars Entertainment Corporation
CZR
| $862K | ﹤0.01% |
63,415
+3,168
| +5% | +$43.1K |
|
313
Intercontinental Exchange
ICE
$99.8B
| $860K | ﹤0.01% |
9,300
-1,610
| -15% | -$149K |
|
314
Crocs
CROX
$4.72B
| $859K | ﹤0.01% |
20,519
+6,641
| +48% | +$278K |
|
315
Amplify Alternative Harvest ETF
MJ
$183M
| $859K | ﹤0.01% |
+4,182
| New | +$859K |
|
|
BITA
316
DELISTED
Bitauto Holdings Limited
BITA
| $856K | ﹤0.01% |
57,688
+34,059
| +144% | +$505K |
|
317
ProShares UltraPro Short QQQ
SQQQ
$2.32B
| $842K | ﹤0.01% |
+301
| New | +$842K |
|
318
The Mosaic Company
MOS
$10.3B
| $838K | ﹤0.01% |
38,760
+7,378
| +24% | +$160K |
|
319
Boston Properties
BXP
$12.2B
| $837K | ﹤0.01% |
6,074
+4,186
| +222% | +$577K |
|
|
I
320
DELISTED
INTELSAT S. A.
I
| $835K | ﹤0.01% |
118,851
+58,526
| +97% | +$411K |
|
321
Real Estate Select Sector SPDR Fund
XLRE
$7.66B
| $830K | ﹤0.01% |
21,478
+21,049
| +4,907% | +$813K |
|
322
ProShares UltraShort S&P500
SDS
$442M
| $828K | ﹤0.01% |
6,668
-4,087
| -38% | -$508K |
|
323
Canadian Imperial Bank of Commerce
CM
$72.8B
| $827K | ﹤0.01% |
+19,886
| New | +$827K |
|
324
CSX Corp
CSX
$60.6B
| $827K | ﹤0.01% |
34,290
-30,177
| -47% | -$728K |
|
325
Cleveland-Cliffs
CLF
$5.63B
| $818K | ﹤0.01% |
+97,461
| New | +$818K |
|