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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$45.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$30.1M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$25.8M |
| 4 |
Booking.com
BKNG
|
+$22.5M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$17.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$43.6M |
| 2 |
Amgen
AMGN
|
+$33.2M |
| 3 |
Baidu
BIDU
|
+$19.3M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$17.3M |
| 5 |
Micron Technology
MU
|
+$17.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 14.31% |
| 2 | Technology | 13.17% |
| 3 | Communication Services | 11.81% |
| 4 | Healthcare | 4.06% |
| 5 | Financials | 3.84% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2501
PUT
Autoliv
ALV
$8.6B
| $40K | ﹤0.01% |
604
-383
| -39% | -$31.1K |
|
2502
CALL
AMN Healthcare
AMN
$1.28B
| $40K | ﹤0.01% |
56
-164
| -75% | -$6.27K |
|
2503
InfraCap MLP ETF
AMZA
$471M
| $40K | ﹤0.01% |
+433
| New | +$40.5K |
|
|
CVSA
2504
Covista Inc
CVSA
$3.94B
| $40K | ﹤0.01% |
+1,136
| New | +$38.8K |
|
2505
iShares MSCI BIC ETF
BKF
$75.2M
| $40K | ﹤0.01% |
949
-2,275
| -71% | -$93.6K |
|
|
BLUE
2506
PUT
DELISTED
bluebird bio
BLUE
| $40K | ﹤0.01% |
15
-12
| -44% | -$16.8K |
|
2507
CALL
Badger Meter
BMI
$3.66B
| $40K | ﹤0.01% |
92
-9
| -9% | -$400 |
|
2508
CALL
Cal-Maine
CALM
$4.28B
| $40K | ﹤0.01% |
137
+3
| +2% | +$112 |
|
2509
PUT
Caesarstone
CSTE
$72.3M
| $40K | ﹤0.01% |
94
-138
| -59% | -$4.32K |
|
2510
PUT
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$105M
| $40K | ﹤0.01% |
683
-614
| -47% | -$14.1K |
|
2511
Hudbay
HBM
$9.92B
| $40K | ﹤0.01% |
5,441
-14,039
| -72% | -$106K |
|
2512
Monro
MNRO
$525M
| $40K | ﹤0.01% |
724
+325
| +81% | +$15.3K |
|
2513
CALL
The Mosaic Company
MOS
$7.09B
| $40K | ﹤0.01% |
312
-211
| -40% | -$4.57K |
|
2514
Petrobras Class A
PBR.A
$107B
| $40K | ﹤0.01% |
+4,167
| New | +$36.3K |
|
2515
CALL
PepsiCo
PEP
$186B
| $40K | ﹤0.01% |
374
-799
| -68% | -$92.3K |
|
2516
PUT
Ferrari
RACE
$63.3B
| $40K | ﹤0.01% |
436
+135
| +45% | +$14.4K |
|
2517
CALL
RPM International
RPM
$13.7B
| $40K | ﹤0.01% |
392
+126
| +47% | +$6.45K |
|
2518
PUT
Supernus Pharmaceuticals
SUPN
$2.68B
| $40K | ﹤0.01% |
121
-56
| -32% | -$2.42K |
|
2519
Theravance Biopharma
TBPH
$874M
| $40K | ﹤0.01% |
1,177
-2,361
| -67% | -$77.2K |
|
2520
Texas Roadhouse
TXRH
$12.7B
| $40K | ﹤0.01% |
+832
| New | +$40.5K |
|
|
NEWR
2521
DELISTED
New Relic, Inc.
NEWR
| $40K | ﹤0.01% |
+815
| New | +$38.5K |
|
|
GLBL
2522
DELISTED
TerraForm Global, Inc. Class A Common Stock
GLBL
| $40K | ﹤0.01% |
8,514
-15,401
| -64% | -$76.7K |
|
|
FGL
2523
DELISTED
Fidelity & Guaranty Life
FGL
| $40K | ﹤0.01% |
1,290
+1,091
| +548% | +$34K |
|
2524
PUT
American Tower
AMT
$77.7B
| $39K | ﹤0.01% |
504
-420
| -45% | -$58.5K |
|
2525
CALL
Aon
AON
$77.3B
| $39K | ﹤0.01% |
23
-28
| -55% | -$3.91K |
|
Similar funds
Simplex Trading's Q3 2017 Portfolio in Review
As of Q3 2017, Simplex Trading held 7,357 positions worth $2.45B, up 6.4% from $2.3B the previous quarter. Its ten largest holdings account for 24% of the portfolio.
Simplex Trading's Q3 2017 filing shows 1,313 new, 2,078 increased, 2,339 reduced and 1,500 closed positions. Its largest new stake was iShares Russell 2000 ETF: 214,170 shares worth $31.7M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $43.6M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 14% of assets, up from 9.7% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q3 2017 buy was iShares Russell 2000 ETF: 214,170 shares worth $31.7M.
- Simplex Trading added most to Amazon in Q3 2017, an estimated $45.9M increase.
- Simplex Trading's biggest Q3 2017 reduction was Baidu, cutting an estimated $19.3M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q3 2017, selling an estimated $43.6M.
- Simplex Trading's ten largest holdings make up 24% of its $2.45B portfolio in Q3 2017.
- Simplex Trading opened 1,313 new positions and closed 1,500 in Q3 2017.
- Simplex Trading's portfolio value rose 6.4% quarter-over-quarter to $2.45B.
Based on Simplex Trading's 13F filing for Q3 2017, filed 25 Oct 2017.