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 | |
|---|---|---|---|---|---|---|
1126
CALL
Kinross Gold
KGC
$28.3B
| $163K | 0.01% |
867
-425
| -33% | -$2.03K |
|
1127
Telephone and Data Systems
TDS
$3.83B
| $163K | 0.01% |
5,513
-1,448
| -21% | -$41.7K |
|
|
AET
1128
PUT
DELISTED
Aetna Inc
AET
| $163K | 0.01% |
655
-109
| -14% | -$12.5K |
|
|
STRP
1129
PUT
DELISTED
Straight Path Communications Inc.
STRP
| $163K | 0.01% |
230
+174
| +311% | +$5.75K |
|
1130
CALL
Acuity Brands
AYI
$9.79B
| $162K | 0.01% |
202
+148
| +274% | +$37K |
|
1131
Prudential
PUK
$36.2B
| $162K | 0.01% |
4,937
+4,865
| +6,757% | +$179K |
|
1132
PUT
Range Resources
RRC
$9.08B
| $162K | 0.01% |
561
-320
| -36% | -$13.1K |
|
1133
CALL
Whirlpool
WHR
$2.31B
| $162K | 0.01% |
501
+4
| +0.8% | +$706 |
|
1134
PUT
Walmart Inc
WMT
$863B
| $162K | 0.01% |
9,753
+3,879
| +66% | +$89.8K |
|
|
DD
1135
DELISTED
Du Pont De Nemours E I
DD
| $162K | 0.01% |
2,500
-27,450
| -92% | -$1.8M |
|
|
ROI
1136
PUT
DELISTED
WISDOMTREE LARGECAP GROWTH FUND
ROI
| $162K | 0.01% |
282
-73
| -21% | -$41.9K |
|
|
ODP
1137
DELISTED
ODP
ODP
| $161K | 0.01% |
4,879
+3,782
| +345% | +$185K |
|
1138
CALL
Autodesk
ADSK
$43.3B
| $160K | 0.01% |
483
+332
| +220% | +$19.2K |
|
1139
PUT
Plains All American Pipeline
PAA
$17.4B
| $160K | 0.01% |
159
-46
| -22% | -$1.11K |
|
1140
CALL
Steel Dynamics
STLD
$34.7B
| $160K | 0.01% |
1,636
+1,438
| +726% | +$35.1K |
|
|
INFN
1141
PUT
DELISTED
Infinera Corporation Common Stock
INFN
| $160K | 0.01% |
499
+89
| +22% | +$1.16K |
|
|
VIAB
1142
CALL
DELISTED
Viacom Inc. Class B
VIAB
| $160K | 0.01% |
1,175
+786
| +202% | +$32.5K |
|
|
JKS
1143
JinkoSolar
JKS
$825M
| $159K | 0.01% |
7,841
+4,208
| +116% | +$88.9K |
|
1144
National Healthcare
NHC
$3.46B
| $159K | 0.01% |
2,465
-835
| -25% | -$53K |
|
1145
CALL
RPC Inc
RES
$1.3B
| $159K | 0.01% |
404
+20
| +5% | +$293 |
|
|
AVH
1146
DELISTED
AVIANCA HOLDINGS S.A.
AVH
| $159K | 0.01% |
25,815
+17,628
| +215% | +$103K |
|
1147
CALL
Corning
GLW
$134B
| $158K | 0.01% |
763
-417
| -35% | -$8.36K |
|
1148
PUT
Herbalife
HLF
$1.22B
| $158K | 0.01% |
5,250
+3,456
| +193% | +$103K |
|
1149
iShares S&P 100 ETF
OEF
$19.8B
| $158K | 0.01% |
1,706
+509
| +43% | +$46.9K |
|
|
JASO
1150
DELISTED
JA Solar Holdings, Co., Ltd
JASO
| $158K | 0.01% |
+23,082
| New | +$183K |
|
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.