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 | |
|---|---|---|---|---|---|---|
901
KeyCorp
KEY
$24.4B
| $324K | 0.01% |
17,337
-18,300
| -51% | -$331K |
|
|
GAP
902
PUT
The Gap Inc
GAP
$6.8B
| $324K | 0.01% |
1,377
-1,088
| -44% | -$25.9K |
|
903
PUT
Cisco
CSCO
$444B
| $323K | 0.01% |
1,662
+136
| +9% | +$4.43K |
|
904
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.48B
| $323K | 0.01% |
5,841
+5,384
| +1,178% | +$295K |
|
905
CALL
Eaton
ETN
$161B
| $323K | 0.01% |
1,009
-332
| -25% | -$25.3K |
|
906
CALL
State Street
STT
$50.6B
| $323K | 0.01% |
400
-36
| -8% | -$2.99K |
|
907
CALL
TJX Companies
TJX
$170B
| $322K | 0.01% |
1,298
+712
| +122% | +$26.8K |
|
908
PUT
Southern Company
SO
$109B
| $321K | 0.01% |
1,316
+370
| +39% | +$18.6K |
|
|
WPX
909
PUT
DELISTED
WPX Energy, Inc.
WPX
| $320K | 0.01% |
1,434
+176
| +14% | +$2.01K |
|
910
CALL
Mohawk Industries
MHK
$6.71B
| $319K | 0.01% |
143
+83
| +138% | +$19.6K |
|
|
SONC
911
DELISTED
Sonic Corp
SONC
| $319K | 0.01% |
+12,071
| New | +$333K |
|
912
CALL
EOG Resources
EOG
$77.5B
| $318K | 0.01% |
1,804
+1,077
| +148% | +$99.2K |
|
913
PUT
Intuitive Surgical
ISRG
$119B
| $317K | 0.01% |
5,337
+1,683
| +46% | +$162K |
|
|
CAF
914
Morgan Stanley China A Share Fund
CAF
$338M
| $316K | 0.01% |
14,153
+12,489
| +751% | +$258K |
|
|
CMA
915
DELISTED
Comerica
CMA
| $316K | 0.01% |
+4,316
| New | +$303K |
|
|
ESV
916
DELISTED
Ensco Rowan plc
ESV
| $316K | 0.01% |
15,330
+13,238
| +633% | +$380K |
|
917
Jacobs Solutions
J
$15.6B
| $315K | 0.01% |
7,006
-3,303
| -32% | -$147K |
|
918
PUT
Kohl's
KSS
$2.06B
| $315K | 0.01% |
993
-811
| -45% | -$31.1K |
|
919
CALL
Royal Caribbean
RCL
$76B
| $315K | 0.01% |
961
+634
| +194% | +$67.3K |
|
920
Travelzoo
TZOO
$103M
| $315K | 0.01% |
28,821
+26,374
| +1,078% | +$263K |
|
|
HNP
921
DELISTED
Huaneng Power Intl, Inc.
HNP
| $315K | 0.01% |
+11,361
| New | +$326K |
|
922
PUT
Trip.com Group
TCOM
$27.1B
| $314K | 0.01% |
2,421
+285
| +13% | +$15.1K |
|
923
CALL
Alnylam Pharmaceuticals
ALNY
$35.9B
| $313K | 0.01% |
334
+248
| +288% | +$15.8K |
|
|
BEAT
924
CALL
DELISTED
BioTelemetry, Inc.
BEAT
| $313K | 0.01% |
652
-412
| -39% | -$12.3K |
|
925
PUT
Lumentum
LITE
$64.9B
| $312K | 0.01% |
842
+62
| +8% | +$3.32K |
|
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.