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 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CHL
1026
DELISTED
China Mobile Limited
CHL
| $193K | 0.01% |
3,340
-2,750
| -45% | -$155K |
|
1027
ProShares UltraPro Short Dow 30
SDOW
$173M
| $192K | 0.01% |
51
+41
| +410% | +$162K |
|
|
HDP
1028
DELISTED
Hortonworks, Inc.
HDP
| $192K | 0.01% |
+17,982
| New | +$203K |
|
1029
Alliant Energy
LNT
$19.2B
| $191K | 0.01% |
+4,816
| New | +$179K |
|
1030
CALL
Transocean
RIG
$5.89B
| $191K | 0.01% |
2,397
+199
| +9% | +$2.04K |
|
1031
CALL
Stryker
SYK
$122B
| $191K | 0.01% |
194
+68
| +54% | +$7.6K |
|
1032
PUT
Voya Financial
VOYA
$8.78B
| $191K | 0.01% |
363
+228
| +169% | +$6.97K |
|
1033
CALL
Jacobs Solutions
J
$15.6B
| $190K | 0.01% |
354
-24
| -6% | -$946 |
|
1034
CALL
Skyworks Solutions
SWKS
$9.1B
| $190K | 0.01% |
986
-854
| -46% | -$58.1K |
|
1035
CALL
Valero Energy
VLO
$90.6B
| $190K | 0.01% |
1,897
+533
| +39% | +$30.2K |
|
1036
PUT
Harley-Davidson
HOG
$2.79B
| $189K | 0.01% |
707
+417
| +144% | +$19.2K |
|
1037
Lindsay Corp
LNN
$1.15B
| $189K | 0.01% |
2,794
+2,084
| +294% | +$148K |
|
|
AUY
1038
DELISTED
Yamana Gold, Inc.
AUY
| $189K | 0.01% |
36,538
+28,038
| +330% | +$126K |
|
1039
CALL
Chubb
CB
$137B
| $188K | 0.01% |
350
+60
| +21% | +$7.4K |
|
1040
Lear
LEA
$7.14B
| $188K | 0.01% |
1,854
+1,687
| +1,010% | +$190K |
|
1041
LG Display
LPL
$3.37B
| $188K | 0.01% |
+16,263
| New | +$175K |
|
1042
PUT
Southwest Airlines
LUV
$21.9B
| $188K | 0.01% |
502
+275
| +121% | +$11.8K |
|
|
CHK
1043
CALL
DELISTED
Chesapeake Energy Corporation
CHK
| $188K | 0.01% |
9
-9
| -50% | -$8.64K |
|
|
EEP
1044
DELISTED
Enbridge Energy Partners
EEP
| $188K | 0.01% |
+8,140
| New | +$172K |
|
1045
Ironwood Pharmaceuticals
IRWD
$624M
| $187K | 0.01% |
+17,103
| New | +$167K |
|
|
VIAB
1046
PUT
DELISTED
Viacom Inc. Class B
VIAB
| $187K | 0.01% |
1,283
+980
| +323% | +$40.5K |
|
|
WBMD
1047
DELISTED
WebMD Health Corp.
WBMD
| $187K | 0.01% |
3,226
-18,364
| -85% | -$1.15M |
|
|
SCNB
1048
DELISTED
Suffolk Bancorp
SCNB
| $187K | 0.01% |
+5,974
| New | +$149K |
|
1049
PUT
First Solar
FSLR
$22.1B
| $186K | 0.01% |
355
-542
| -60% | -$28.9K |
|
1050
CALL
Cheniere Energy
LNG
$57B
| $186K | 0.01% |
1,193
+745
| +166% | +$26.2K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.