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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1076
CALL
Itaú Unibanco
ITUB
$92B
| $144K | 0.01% |
2,000
+868
| +77% | +$2.64K |
|
1077
CALL
Silicon Motion
SIMO
$9.8B
| $144K | 0.01% |
244
+219
| +876% | +$7.07K |
|
|
EMC
1078
PUT
DELISTED
EMC CORPORATION
EMC
| $144K | 0.01% |
2,321
+1,355
| +140% | +$34.3K |
|
1079
PUT
Alcoa
AA
$11.9B
| $143K | 0.01% |
450
+334
| +288% | +$6.8K |
|
1080
iShares Europe ETF
IEV
$1.62B
| $143K | 0.01% |
3,658
+3,591
| +5,360% | +$135K |
|
1081
Immersion
IMMR
$218M
| $143K | 0.01% |
17,370
-2,501
| -13% | -$20.7K |
|
|
RAI
1082
CALL
DELISTED
Reynolds American Inc
RAI
| $143K | 0.01% |
1,541
+1,241
| +414% | +$60.9K |
|
1083
CALL
Albemarle
ALB
$13.8B
| $142K | 0.01% |
202
+177
| +708% | +$9.71K |
|
1084
PUT
CVS Health
CVS
$136B
| $142K | 0.01% |
933
+39
| +4% | +$3.79K |
|
1085
PUT
GE Aerospace
GE
$362B
| $142K | 0.01% |
955
+473
| +98% | +$66.8K |
|
1086
CALL
HCA Healthcare
HCA
$83.5B
| $142K | 0.01% |
316
+89
| +39% | +$6.21K |
|
1087
PUT
Oracle
ORCL
$346B
| $142K | 0.01% |
1,577
+692
| +78% | +$25.6K |
|
1088
United Rentals
URI
$71.4B
| $142K | 0.01% |
2,287
-12,359
| -84% | -$687K |
|
|
EXPR
1089
DELISTED
Express, Inc.
EXPR
| $142K | 0.01% |
333
-178
| -35% | -$63.9K |
|
1090
CALL
BioMarin Pharmaceuticals
BMRN
$11.4B
| $141K | 0.01% |
438
+207
| +90% | +$16.8K |
|
1091
CALL
Darden Restaurants
DRI
$22.2B
| $141K | 0.01% |
618
| – | – |
|
1092
Hewlett Packard
HPE
$63.1B
| $141K | 0.01% |
13,764
-2,581
| -16% | -$21.6K |
|
|
LLL
1093
DELISTED
L3 Technologies, Inc.
LLL
| $141K | 0.01% |
1,190
-872
| -42% | -$102K |
|
1094
Coeur Mining
CDE
$15.7B
| $140K | 0.01% |
25,088
+22,278
| +793% | +$77.1K |
|
1095
Global X Silver Miners ETF NEW
SIL
$4.07B
| $140K | 0.01% |
+5,311
| New | +$115K |
|
1096
CALL
Southern Company
SO
$109B
| $140K | 0.01% |
795
+543
| +215% | +$26.5K |
|
1097
CALL
Yelp
YELP
$1.35B
| $140K | 0.01% |
424
-366
| -46% | -$7.49K |
|
|
WBMD
1098
CALL
DELISTED
WebMD Health Corp.
WBMD
| $140K | 0.01% |
157
+98
| +166% | +$5.25K |
|
1099
CALL
Canadian Solar
CSIQ
$997M
| $139K | 0.01% |
724
+235
| +48% | +$4.82K |
|
|
GRMN
1100
CALL
Garmin
GRMN
$46.3B
| $139K | 0.01% |
249
+101
| +68% | +$3.75K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.