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 | |
|---|---|---|---|---|---|---|
|
LUMO
1826
PUT
DELISTED
Lumos Pharma, Inc. Common Stock
LUMO
| $70K | ﹤0.01% |
11
| – | – |
|
|
IPHI
1827
CALL
DELISTED
INPHI CORPORATION
IPHI
| $70K | ﹤0.01% |
88
+7
| +9% | +$270 |
|
|
BID
1828
PUT
DELISTED
Sotheby's
BID
| $70K | ﹤0.01% |
770
-317
| -29% | -$11.2K |
|
1829
Cracker Barrel
CBRL
$1.2B
| $69K | ﹤0.01% |
+527
| New | +$80.9K |
|
1830
CALL
Coca-Cola Europacific Partners
CCEP
$46.5B
| $69K | ﹤0.01% |
199
+44
| +28% | +$1.68K |
|
1831
Clean Harbors
CLH
$16.1B
| $69K | ﹤0.01% |
+1,451
| New | +$71.9K |
|
1832
CALL
FormFactor
FORM
$8.11B
| $69K | ﹤0.01% |
511
-16
| -3% | -$161 |
|
1833
CALL
GSK
GSK
$103B
| $69K | ﹤0.01% |
1,303
+342
| +36% | +$18.8K |
|
1834
CALL
Neurocrine Biosciences
NBIX
$17.7B
| $69K | ﹤0.01% |
284
-350
| -55% | -$17.4K |
|
1835
Pitney Bowes
PBI
$2.42B
| $69K | ﹤0.01% |
3,848
-931
| -19% | -$17.1K |
|
|
SF
1836
CALL
Stifel
SF
$12.3B
| $69K | ﹤0.01% |
904
-181
| -17% | -$2.91K |
|
1837
CALL
TripAdvisor
TRIP
$1.59B
| $69K | ﹤0.01% |
562
-348
| -38% | -$22.4K |
|
1838
Under Armour
UAA
$3B
| $69K | ﹤0.01% |
1,789
-7,211
| -80% | -$291K |
|
1839
PUT
Vanguard FTSE Europe ETF
VGK
$30B
| $69K | ﹤0.01% |
1,062
+6
| +0.6% | +$289 |
|
|
XIN
1840
DELISTED
Xinyuan Real Estate
XIN
| $69K | ﹤0.01% |
1,100
-671
| -38% | -$38.5K |
|
|
NFX
1841
CALL
DELISTED
Newfield Exploration
NFX
| $69K | ﹤0.01% |
237
+63
| +36% | +$2.77K |
|
1842
CALL
Acadia Pharmaceuticals
ACAD
$4.25B
| $68K | ﹤0.01% |
575
+23
| +4% | +$780 |
|
1843
Korea Electric Power
KEP
$15.5B
| $68K | ﹤0.01% |
+2,828
| New | +$74.6K |
|
1844
PUT
CarMax
KMX
$8.27B
| $68K | ﹤0.01% |
423
+182
| +76% | +$10.3K |
|
1845
NovaGold Resources
NG
$2.6B
| $68K | ﹤0.01% |
12,229
-16,761
| -58% | -$104K |
|
1846
PUT
Bank OZK
OZK
$5.49B
| $68K | ﹤0.01% |
526
+480
| +1,043% | +$18.2K |
|
1847
PUT
Phillips 66
PSX
$82.9B
| $68K | ﹤0.01% |
597
+62
| +12% | +$4.82K |
|
|
SCHW
1848
PUT
Charles Schwab
SCHW
$177B
| $68K | ﹤0.01% |
1,641
+924
| +129% | +$27.1K |
|
1849
VirnetX Holding Corp
VHC
$52.3M
| $68K | ﹤0.01% |
1,125
-626
| -36% | -$39.3K |
|
|
LMNX
1850
CALL
DELISTED
Luminex Corp
LMNX
| $68K | ﹤0.01% |
+467
| New | +$10.2K |
|
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.