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 | |
|---|---|---|---|---|---|---|
|
TLN
876
DELISTED
Talen Energy Corporation
TLN
| $254K | 0.02% |
18,378
+5,495
| +43% | +$75.5K |
|
|
BGG
877
DELISTED
Briggs & Stratton Corp.
BGG
| $253K | 0.02% |
+13,589
| New | +$280K |
|
878
WisdomTree India Earnings Fund ETF
EPI
$2B
| $252K | 0.02% |
11,697
-38,301
| -77% | -$819K |
|
879
PUT
Radware
RDWR
$1.21B
| $252K | 0.02% |
1,253
+776
| +163% | +$10.1K |
|
880
VanEck Retail ETF
RTH
$245M
| $252K | 0.02% |
+3,240
| New | +$257K |
|
|
SODA
881
DELISTED
SodaStream International Ltd
SODA
| $252K | 0.02% |
9,525
-2,692
| -22% | -$70.9K |
|
882
CACI
CACI
$10.7B
| $251K | 0.02% |
2,495
+55
| +2% | +$5.31K |
|
|
CKEC
883
DELISTED
Carmike Cinemas Inc
CKEC
| $250K | 0.02% |
7,654
+6,074
| +384% | +$191K |
|
884
AGNC Investment
AGNC
$12.2B
| $249K | 0.02% |
12,770
+12,564
| +6,099% | +$246K |
|
885
PUT
GE Aerospace
GE
$361B
| $249K | 0.02% |
908
-278
| -23% | -$41.5K |
|
|
GTLS
886
DELISTED
Chart Industries
GTLS
| $249K | 0.02% |
7,598
+7,086
| +1,384% | +$205K |
|
887
PUT
SLB Ltd
SLB
$70.9B
| $249K | 0.02% |
1,324
-953
| -42% | -$75.6K |
|
|
TIF
888
CALL
DELISTED
Tiffany & Co.
TIF
| $249K | 0.02% |
549
+156
| +40% | +$10.4K |
|
889
Ingredion
INGR
$6.38B
| $248K | 0.02% |
+1,865
| New | +$249K |
|
|
CSC
890
DELISTED
Computer Sciences
CSC
| $248K | 0.02% |
4,760
+4,631
| +3,590% | +$224K |
|
|
WWAV
891
CALL
DELISTED
The WhiteWave Foods Company
WWAV
| $247K | 0.02% |
1,806
+1,565
| +649% | +$86.1K |
|
892
PUT
United States Natural Gas Fund
UNG
$474M
| $245K | 0.02% |
52
-7
| -12% | -$925 |
|
|
TSRO
893
PUT
DELISTED
TESARO, Inc.
TSRO
| $245K | 0.02% |
529
-53
| -9% | -$4.95K |
|
|
IOC
894
PUT
DELISTED
Interoil Corporation
IOC
| $245K | 0.02% |
180
+76
| +73% | +$3.73K |
|
|
NILE
895
CALL
DELISTED
Blue Nile, Inc.
NILE
| $245K | 0.02% |
+451
| New | +$14.5K |
|
896
CALL
Halozyme
HALO
$9.43B
| $244K | 0.02% |
986
+280
| +40% | +$2.86K |
|
|
SIGM
897
DELISTED
Sigma Designs Inc
SIGM
| $244K | 0.02% |
31,450
+714
| +2% | +$5.17K |
|
|
TGI
898
DELISTED
Triumph Group
TGI
| $242K | 0.02% |
+8,697
| New | +$281K |
|
899
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $242K | 0.02% |
+9,839
| New | +$244K |
|
|
PARA
900
CALL
DELISTED
Paramount Global Class B
PARA
| $241K | 0.02% |
1,190
+149
| +14% | +$7.91K |
|
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.