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
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
HNP
2151
PUT
DELISTED
Huaneng Power Intl, Inc.
HNP
| $65K | ﹤0.01% |
166
+133
| +403% | +$3.81K |
|
|
AKAO
2152
CALL
DELISTED
Achaogen Inc
AKAO
| $65K | ﹤0.01% |
591
-275
| -32% | -$6.28K |
|
|
WOOF
2153
CALL
DELISTED
VCA Inc.
WOOF
| $65K | ﹤0.01% |
234
+207
| +767% | +$19K |
|
2154
CALL
Ashland
ASH
$3.04B
| $64K | ﹤0.01% |
171
-242
| -59% | -$15.4K |
|
2155
PUT
Altisource Portfolio Solutions
ASPS
$65.4M
| $64K | ﹤0.01% |
10
+1
| +11% | +$199 |
|
2156
Clean Harbors
CLH
$16.1B
| $64K | ﹤0.01% |
+1,153
| New | +$66.3K |
|
2157
PUT
Campbell Soup
CPB
$6.51B
| $64K | ﹤0.01% |
182
-42
| -19% | -$2.38K |
|
|
ELME
2158
Elme Communities
ELME
$132M
| $64K | ﹤0.01% |
2,021
+675
| +50% | +$21.7K |
|
2159
Intrepid Potash
IPI
$460M
| $64K | ﹤0.01% |
+2,860
| New | +$59.9K |
|
2160
CALL
Liberty Latin America Class C
LILAK
$1.5B
| $64K | ﹤0.01% |
1,357
+206
| +18% | +$3.78K |
|
2161
PUT
Liquidity Services
LQDT
$1.17B
| $64K | ﹤0.01% |
520
+53
| +11% | +$369 |
|
2162
Nektar Therapeutics
NKTR
$2.39B
| $64K | ﹤0.01% |
221
+188
| +570% | +$54.3K |
|
2163
PUT
Prudential Financial
PRU
$41.7B
| $64K | ﹤0.01% |
1,781
+1,566
| +728% | +$166K |
|
|
SAFE
2164
Safehold
SAFE
$1.19B
| $64K | ﹤0.01% |
1,102
-810
| -42% | -$47.9K |
|
2165
PUT
SAP
SAP
$187B
| $64K | ﹤0.01% |
273
+35
| +15% | +$3.61K |
|
|
NTRI
2166
CALL
DELISTED
NutriSystem, Inc.
NTRI
| $64K | ﹤0.01% |
160
+108
| +208% | +$5.59K |
|
|
SCMP
2167
DELISTED
Sucampo Pharmaceuticals, Inc.
SCMP
| $64K | ﹤0.01% |
6,112
+3,155
| +107% | +$32.2K |
|
|
SGYPW
2168
CALL
DELISTED
Synergy Pharmaceuticals, Inc. - Warrants
SGYPW
| $64K | ﹤0.01% |
1,375
+610
| +80% | +$28.4K |
|
2169
PUT
Aptiv
APTV
$12B
| $63K | ﹤0.01% |
394
+246
| +166% | +$20.5K |
|
2170
Barnes & Noble Education
BNED
$412M
| $63K | ﹤0.01% |
60
+27
| +82% | +$27.1K |
|
2171
CALL
CF Industries
CF
$19.2B
| $63K | ﹤0.01% |
1,110
+201
| +22% | +$5.54K |
|
2172
CALL
Goodyear
GT
$2.07B
| $63K | ﹤0.01% |
275
-696
| -72% | -$24K |
|
2173
PUT
Jakks Pacific
JAKK
$280M
| $63K | ﹤0.01% |
58
+19
| +49% | +$868 |
|
2174
CALL
Packaging Corp of America
PKG
$22.7B
| $63K | ﹤0.01% |
92
-69
| -43% | -$6.95K |
|
2175
PUT
TSMC
TSM
$2.09T
| $63K | ﹤0.01% |
668
-392
| -37% | -$13.6K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.