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 | |
|---|---|---|---|---|---|---|
976
Ciena
CIEN
$57.3B
| $217K | 0.01% |
9,969
-10,921
| -52% | -$228K |
|
977
ConocoPhillips
COP
$147B
| $217K | 0.01% |
5,010
-48,300
| -91% | -$2.01M |
|
978
PUT
Philip Morris
PM
$296B
| $217K | 0.01% |
1,764
+536
| +44% | +$53.7K |
|
979
State Street SPDR S&P Homebuilders ETF
XHB
$1.7B
| $217K | 0.01% |
6,405
+4,406
| +220% | +$156K |
|
|
MNK
980
CALL
DELISTED
MALLINCKRODT PUBLIC LIMITED COMPANY
MNK
| $217K | 0.01% |
631
+75
| +13% | +$5.43K |
|
981
Churchill Downs
CHDN
$5.83B
| $216K | 0.01% |
8,886
+4,932
| +125% | +$116K |
|
982
CALL
ProShares UltraShort Health Care
RXD
$3.29M
| $216K | 0.01% |
1,384
-13
| -0.9% | -$2.24K |
|
983
CALL
LendingTree
TREE
$551M
| $216K | 0.01% |
165
-54
| -25% | -$5.38K |
|
|
EGRX
984
CALL
DELISTED
Eagle Pharmaceuticals, Inc.
EGRX
| $216K | 0.01% |
229
-3
| -1% | -$166 |
|
|
BWLD
985
DELISTED
Buffalo Wild Wings, Inc.
BWLD
| $216K | 0.01% |
+1,538
| New | +$239K |
|
986
CALL
United States Oil Fund
USO
$2.51B
| $215K | 0.01% |
517
+111
| +27% | +$9.32K |
|
987
W.P. Carey
WPC
$16.7B
| $215K | 0.01% |
+3,411
| New | +$228K |
|
|
VIVO
988
DELISTED
Meridian Bioscience Inc
VIVO
| $215K | 0.01% |
11,158
+6,955
| +165% | +$136K |
|
|
DNY
989
DELISTED
DONNELLEY R R & SONS CO
DNY
| $215K | 0.01% |
+13,733
| New | +$215K |
|
|
ATHN
990
DELISTED
Athenahealth, Inc.
ATHN
| $214K | 0.01% |
+1,697
| New | +$216K |
|
991
PUT
Ionis Pharmaceuticals
IONS
$9.31B
| $213K | 0.01% |
734
+308
| +72% | +$9.64K |
|
992
PUT
NOV
NOV
$7.24B
| $213K | 0.01% |
910
+270
| +42% | +$9.07K |
|
993
CALL
Silicon Motion
SIMO
$9.82B
| $213K | 0.01% |
227
+181
| +393% | +$9.44K |
|
|
CIM
994
Chimera Investment
CIM
$1.03B
| $212K | 0.01% |
4,451
+4,298
| +2,809% | +$210K |
|
995
Fidelity National Financial
FNF
$13.1B
| $212K | 0.01% |
+8,301
| New | +$214K |
|
996
CALL
RH
RH
$3.13B
| $212K | 0.01% |
801
-197
| -20% | -$6.27K |
|
997
PUT
Cognizant
CTSH
$20.2B
| $211K | 0.01% |
458
-128
| -22% | -$7.28K |
|
998
Hecla Mining
HL
$10.2B
| $211K | 0.01% |
+37,061
| New | +$227K |
|
999
Texas Capital Bancshares
TCBI
$4.32B
| $211K | 0.01% |
+3,845
| New | +$194K |
|
1000
PUT
Alaunos Therapeutics
TCRT
$4.69M
| $211K | 0.01% |
5
+2
| +67% | +$1.61K |
|
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.