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 | |
|---|---|---|---|---|---|---|
926
PUT
BP
BP
$114B
| $233K | 0.02% |
2,102
-3,526
| -63% | -$102K |
|
927
Euronet Worldwide
EEFT
$2.9B
| $233K | 0.02% |
+2,848
| New | +$218K |
|
928
CALL
General Motors
GM
$71.9B
| $233K | 0.02% |
1,277
-1,689
| -57% | -$52.8K |
|
|
ILG
929
PUT
DELISTED
ILG, Inc Common Stock
ILG
| $233K | 0.02% |
3,187
-392
| -11% | -$6.78K |
|
930
PUT
VF Corp
VFC
$6.57B
| $232K | 0.02% |
539
+177
| +49% | +$10.2K |
|
931
CALL
Ross Stores
ROST
$75.6B
| $231K | 0.02% |
587
+470
| +402% | +$28.9K |
|
|
FIG
932
DELISTED
Fortress Investment Group Llc
FIG
| $230K | 0.02% |
46,589
+10,861
| +30% | +$53.4K |
|
933
PUT
Wheaton Precious Metals
WPM
$49.9B
| $229K | 0.02% |
1,398
-652
| -32% | -$17.9K |
|
|
PSG
934
DELISTED
Performance Sports Group Ltd.
PSG
| $229K | 0.02% |
56,426
+49,871
| +761% | +$155K |
|
935
Gray Television
GTN
$393M
| $228K | 0.02% |
22,031
+15,654
| +245% | +$171K |
|
|
PBFX
936
DELISTED
PBF LOGISTICS LP
PBFX
| $228K | 0.02% |
+11,538
| New | +$243K |
|
|
ZLTQ
937
DELISTED
ZELTIQ Aesthetics, Inc.
ZLTQ
| $228K | 0.02% |
5,827
+4,387
| +305% | +$157K |
|
938
PUT
Ambarella
AMBA
$2.94B
| $227K | 0.02% |
885
+127
| +17% | +$7.96K |
|
|
SGI
939
PUT
Somnigroup International
SGI
$14.3B
| $227K | 0.02% |
780
+708
| +983% | +$12.6K |
|
940
CALL
Dick's Sporting Goods
DKS
$18.4B
| $226K | 0.02% |
487
-43
| -8% | -$2.37K |
|
941
CALL
DexCom
DXCM
$27.4B
| $226K | 0.02% |
1,740
+1,692
| +3,525% | +$37.7K |
|
942
Hewlett Packard
HPE
$64.2B
| $226K | 0.02% |
17,147
-35,067
| -67% | -$433K |
|
|
SNBR
943
DELISTED
Sleep Number
SNBR
| $226K | 0.02% |
10,470
-14,426
| -58% | -$355K |
|
|
BKI
944
DELISTED
Black Knight, Inc. Common Stock
BKI
| $226K | 0.02% |
5,538
+3,440
| +164% | +$135K |
|
|
HNP
945
DELISTED
Huaneng Power Intl, Inc.
HNP
| $226K | 0.02% |
9,006
-2,471
| -22% | -$61K |
|
|
ESPR
946
DELISTED
Esperion Therapeutics
ESPR
| $225K | 0.02% |
16,315
+11,570
| +244% | +$131K |
|
|
SHLD
947
PUT
DELISTED
Sears Holding Corporation
SHLD
| $225K | 0.02% |
433
+216
| +100% | +$3.04K |
|
|
CEMP
948
CALL
DELISTED
Cempra, Inc.
CEMP
| $225K | 0.02% |
416
-296
| -42% | -$6.37K |
|
|
AMSG
949
DELISTED
Amsurg Corp
AMSG
| $225K | 0.02% |
+3,364
| New | +$235K |
|
950
Prudential
PUK
$36B
| $224K | 0.02% |
6,481
+1,544
| +31% | +$53.2K |
|
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.