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 | |
|---|---|---|---|---|---|---|
1051
CALL
LendingTree
TREE
$550M
| $186K | 0.01% |
219
+186
| +564% | +$15.8K |
|
1052
ProShares UltraShort Yen
YCS
$34.5M
| $186K | 0.01% |
+11,736
| New | +$205K |
|
|
GAP
1053
CALL
The Gap Inc
GAP
$6.8B
| $186K | 0.01% |
1,657
+1,123
| +210% | +$23.9K |
|
1054
LivePerson
LPSN
$18.6M
| $185K | 0.01% |
+1,950
| New | +$186K |
|
|
DRE
1055
DELISTED
Duke Realty Corp.
DRE
| $185K | 0.01% |
6,951
+4,000
| +136% | +$94K |
|
1056
PUT
AB InBev
BUD
$155B
| $184K | 0.01% |
509
-542
| -52% | -$68.2K |
|
1057
CALL
NXP Semiconductors
NXPI
$70B
| $184K | 0.01% |
919
+48
| +6% | +$4.12K |
|
|
QIHU
1058
CALL
DELISTED
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
| $184K | 0.01% |
4,281
+1,046
| +32% | +$77.3K |
|
|
AMRN
1059
CALL
Amarin Corp
AMRN
$285M
| $183K | 0.01% |
108
+86
| +391% | +$3.23K |
|
1060
CALL
Post Holdings
POST
$4.09B
| $183K | 0.01% |
202
-102
| -34% | -$4.93K |
|
|
BBBY
1061
PUT
DELISTED
Bed Bath & Beyond Inc
BBBY
| $183K | 0.01% |
614
+403
| +191% | +$18.3K |
|
|
TFCF
1062
PUT
DELISTED
Twenty-First Century Fox, Inc. Class B
TFCF
| $183K | 0.01% |
266
-36
| -12% | -$1.05K |
|
1063
PUT
Eaton
ETN
$161B
| $182K | 0.01% |
308
-266
| -46% | -$16.3K |
|
1064
NCR Voyix
VYX
$1.05B
| $182K | 0.01% |
+10,704
| New | +$194K |
|
1065
Gold Fields
GFI
$28.9B
| $181K | 0.01% |
36,998
+17,296
| +88% | +$72.1K |
|
|
KS
1066
DELISTED
KapStone Paper and Pack Corp.
KS
| $181K | 0.01% |
13,989
-79,044
| -85% | -$1.16M |
|
1067
CALL
Pediatrix Medical
MD
$2.1B
| $180K | 0.01% |
182
+54
| +42% | +$3.71K |
|
|
PNRA
1068
CALL
DELISTED
Panera Bread Co
PNRA
| $179K | 0.01% |
185
+89
| +93% | +$19K |
|
|
INVN
1069
PUT
DELISTED
Invensense Inc
INVN
| $179K | 0.01% |
1,201
+477
| +66% | +$3.29K |
|
1070
CALL
Murphy Oil
MUR
$5.65B
| $178K | 0.01% |
943
+749
| +386% | +$22.7K |
|
1071
Plexus
PLXS
$7B
| $178K | 0.01% |
4,132
+1,196
| +41% | +$50.4K |
|
1072
PUT
Toyota
TM
$209B
| $178K | 0.01% |
183
-95
| -34% | -$9.76K |
|
|
SVU
1073
DELISTED
SUPERVALU Inc.
SVU
| $178K | 0.01% |
5,389
+4,959
| +1,153% | +$170K |
|
1074
First Majestic Silver
AG
$8.12B
| $177K | 0.01% |
+13,098
| New | +$137K |
|
1075
NovaGold Resources
NG
$2.6B
| $177K | 0.01% |
28,990
+16,463
| +131% | +$98.2K |
|
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.