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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1051
PUT
Perrigo
PRGO
$1.4B
| $262K | 0.01% |
303
+30
| +11% | +$2.28K |
|
|
WDR
1052
DELISTED
Waddell & Reed Financial, Inc.
WDR
| $262K | 0.01% |
15,434
+3,655
| +31% | +$66.9K |
|
|
PAY
1053
DELISTED
Verifone Systems Inc
PAY
| $262K | 0.01% |
+14,030
| New | +$268K |
|
1054
PUT
Deere & Co
DE
$165B
| $261K | 0.01% |
2,070
-890
| -30% | -$96.4K |
|
1055
CALL
Johnson Controls International
JCI
$87.4B
| $261K | 0.01% |
1,027
+165
| +19% | +$6.98K |
|
1056
PUT
MGM Resorts International
MGM
$11.5B
| $261K | 0.01% |
2,238
+1,746
| +355% | +$48.4K |
|
|
MXIM
1057
CALL
DELISTED
Maxim Integrated Products
MXIM
| $261K | 0.01% |
1,656
+1,241
| +299% | +$54.4K |
|
1058
Restaurant Brands International
QSR
$25.1B
| $260K | 0.01% |
4,679
-10,329
| -69% | -$541K |
|
|
ANSS
1059
DELISTED
Ansys
ANSS
| $258K | 0.01% |
+2,420
| New | +$242K |
|
1060
Invesco
IVZ
$13.2B
| $258K | 0.01% |
+8,451
| New | +$264K |
|
1061
CALL
NRG Energy
NRG
$30.2B
| $258K | 0.01% |
925
+572
| +162% | +$9.48K |
|
1062
CALL
Exelixis
EXEL
$14B
| $256K | 0.01% |
1,538
+901
| +141% | +$18.3K |
|
1063
PUT
McDonald's
MCD
$187B
| $255K | 0.01% |
1,810
-792
| -30% | -$99.4K |
|
1064
SunCoke Energy
SXC
$763M
| $255K | 0.01% |
+28,500
| New | +$279K |
|
1065
PUT
Tyson Foods
TSN
$20B
| $255K | 0.01% |
1,434
+1,121
| +358% | +$70.6K |
|
|
SYT
1066
PUT
DELISTED
Syngenta Ag
SYT
| $255K | 0.01% |
1,500
+1,497
| +49,900% | +$128K |
|
1067
CALL
Southwest Airlines
LUV
$21.9B
| $254K | 0.01% |
1,541
+517
| +50% | +$27.8K |
|
1068
CALL
Pfizer
PFE
$143B
| $254K | 0.01% |
3,048
+89
| +3% | +$2.81K |
|
|
CPN
1069
DELISTED
Calpine Corporation
CPN
| $254K | 0.01% |
23,030
-49,599
| -68% | -$569K |
|
1070
BioMarin Pharmaceuticals
BMRN
$11.4B
| $252K | 0.01% |
2,871
-12,771
| -82% | -$1.14M |
|
1071
Fabrinet
FN
$18.6B
| $252K | 0.01% |
+6,006
| New | +$249K |
|
1072
PUT
Range Resources
RRC
$9.08B
| $252K | 0.01% |
1,161
+656
| +130% | +$20.3K |
|
1073
Buckle
BKE
$2.16B
| $251K | 0.01% |
+13,498
| New | +$272K |
|
1074
Quad
QUAD
$428M
| $251K | 0.01% |
9,970
+2,716
| +37% | +$69.6K |
|
|
AGU
1075
DELISTED
Agrium
AGU
| $251K | 0.01% |
2,630
+1,710
| +186% | +$172K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.