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 | |
|---|---|---|---|---|---|---|
901
PUT
Polaris
PII
$4.11B
| $241K | 0.02% |
311
+21
| +7% | +$1.82K |
|
902
CALL
Analog Devices
ADI
$184B
| $240K | 0.02% |
1,147
+945
| +468% | +$58.6K |
|
|
EMES
903
DELISTED
Emerge Energy Services LP
EMES
| $240K | 0.02% |
18,420
+17,977
| +4,058% | +$205K |
|
|
BUFF
904
DELISTED
Blue Buffalo Pet Products, Inc
BUFF
| $240K | 0.02% |
+10,137
| New | +$257K |
|
905
CALL
AbbVie
ABBV
$454B
| $239K | 0.02% |
3,628
+1,284
| +55% | +$83.1K |
|
|
TERP
906
DELISTED
TerraForm Power, Inc
TERP
| $239K | 0.02% |
17,214
+5,971
| +53% | +$74.7K |
|
|
SHPG
907
CALL
DELISTED
Shire pic
SHPG
| $239K | 0.02% |
1,131
-421
| -27% | -$82.1K |
|
908
CALL
International Paper
IP
$20.4B
| $238K | 0.02% |
1,176
+453
| +63% | +$20K |
|
909
HP
HPQ
$22.8B
| $237K | 0.02% |
15,307
+7,307
| +91% | +$104K |
|
910
CALL
Veeva Systems
VEEV
$29.4B
| $237K | 0.02% |
807
+260
| +48% | +$10.1K |
|
|
BBG
911
DELISTED
Bill Barrett Corp
BBG
| $237K | 0.02% |
+42,670
| New | +$254K |
|
912
CALL
Honeywell
HON
$78.6B
| $236K | 0.02% |
815
+186
| +30% | +$19.4K |
|
913
PUT
Vertex Pharmaceuticals
VRTX
$121B
| $236K | 0.02% |
379
+272
| +254% | +$25.7K |
|
|
CVRR
914
DELISTED
CVR Refining, LP
CVRR
| $236K | 0.02% |
27,007
+11,111
| +70% | +$79K |
|
|
SONC
915
DELISTED
Sonic Corp
SONC
| $236K | 0.02% |
9,037
-30
| -0.3% | -$826 |
|
|
K
916
CALL
DELISTED
Kellanova
K
| $235K | 0.02% |
663
+321
| +94% | +$24.6K |
|
917
CALL
Perrigo
PRGO
$1.39B
| $235K | 0.02% |
511
+149
| +41% | +$13.7K |
|
918
Tucows
TCX
$102M
| $235K | 0.02% |
7,347
+3,078
| +72% | +$86.5K |
|
919
PUT
United Airlines
UAL
$37B
| $235K | 0.02% |
1,054
-381
| -27% | -$18.3K |
|
|
USCR
920
DELISTED
U S Concrete, Inc.
USCR
| $235K | 0.02% |
+5,113
| New | +$288K |
|
|
ANDV
921
DELISTED
Andeavor
ANDV
| $235K | 0.02% |
+2,955
| New | +$228K |
|
|
HAR
922
DELISTED
Harman International Industries
HAR
| $235K | 0.02% |
+2,783
| New | +$228K |
|
923
Novartis
NVS
$295B
| $234K | 0.02% |
3,311
-2,242
| -40% | -$163K |
|
|
ENDP
924
CALL
DELISTED
Endo International plc
ENDP
| $234K | 0.02% |
2,273
+694
| +44% | +$13.8K |
|
|
UFS
925
DELISTED
DOMTAR CORPORATION (New)
UFS
| $234K | 0.02% |
6,318
-2,816
| -31% | -$104K |
|
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.