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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
BDSI
1726
DELISTED
BioDelivery Sciences International, Inc.
BDSI
| $80K | 0.01% |
29,693
+28,317
| +2,058% | +$71.9K |
|
1727
CALL
Banco Bradesco
BBD
$38.1B
| $79K | 0.01% |
2,911
+2,024
| +228% | +$9.18K |
|
1728
CALL
Cardinal Health
CAH
$53.4B
| $79K | 0.01% |
669
+419
| +168% | +$33.9K |
|
|
GRMN
1729
PUT
Garmin
GRMN
$46.9B
| $79K | 0.01% |
544
+464
| +580% | +$22.9K |
|
|
SAGE
1730
PUT
DELISTED
Sage Therapeutics
SAGE
| $79K | 0.01% |
760
+696
| +1,088% | +$28.3K |
|
1731
CALL
T-Mobile US
TMUS
$193B
| $79K | 0.01% |
422
+309
| +273% | +$14.2K |
|
1732
PUT
LendingTree
TREE
$544M
| $79K | 0.01% |
177
-33
| -16% | -$3.29K |
|
|
LEAF
1733
DELISTED
Leaf Group Ltd.
LEAF
| $79K | 0.01% |
13,978
-4,315
| -24% | -$24.3K |
|
|
CALL
1734
DELISTED
magicJack VocalTec Ltd
CALL
| $79K | 0.01% |
13,004
+7,938
| +157% | +$48.8K |
|
|
BSFT
1735
DELISTED
BroadSoft, Inc.
BSFT
| $79K | 0.01% |
+1,707
| New | +$76.2K |
|
1736
PUT
Golar LNG
GLNG
$4.95B
| $78K | 0.01% |
247
-287
| -54% | -$5.48K |
|
|
GRMN
1737
CALL
Garmin
GRMN
$46.9B
| $78K | 0.01% |
129
-254
| -66% | -$12.5K |
|
1738
CALL
Hasbro
HAS
$12.6B
| $78K | 0.01% |
462
+174
| +60% | +$14.1K |
|
1739
NRG Energy
NRG
$29.8B
| $78K | 0.01% |
7,027
+2,100
| +43% | +$27.4K |
|
1740
CALL
Synopsys
SNPS
$71.5B
| $78K | 0.01% |
+129
| New | +$7.33K |
|
1741
Telephone and Data Systems
TDS
$3.91B
| $78K | 0.01% |
2,897
-2,616
| -47% | -$76.3K |
|
|
SVU
1742
PUT
DELISTED
SUPERVALU Inc.
SVU
| $78K | 0.01% |
93
+87
| +1,450% | +$3.08K |
|
|
AL
1743
PUT
DELISTED
Air Lease Corp
AL
| $77K | 0.01% |
504
+178
| +55% | +$5.04K |
|
1744
PUT
Cameco
CCJ
$38.3B
| $77K | 0.01% |
727
+591
| +435% | +$5.68K |
|
1745
Myriad Genetics
MYGN
$530M
| $77K | 0.01% |
3,747
+156
| +4% | +$3.96K |
|
1746
NN Inc
NNBR
$272M
| $77K | 0.01% |
4,264
+4,008
| +1,566% | +$67.5K |
|
|
TEF
1747
DELISTED
Telefonica
TEF
| $77K | 0.01% |
+9,864
| New | +$76.4K |
|
1748
State Street Industrial Select Sector SPDR ETF
XLI
$33.9B
| $77K | 0.01% |
1,319
-50,502
| -97% | -$2.93M |
|
|
LL
1749
CALL
DELISTED
LL Flooring Holdings, Inc.
LL
| $77K | 0.01% |
462
-335
| -42% | -$5.5K |
|
|
HTZ
1750
PUT
DELISTED
Hertz Global Holdings, Inc.
HTZ
| $77K | 0.01% |
+630
| New | +$26.4K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.