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 |
Apple
AAPL
|
+$34.8M |
| 2 |
Bausch Health
BHC
|
+$20.3M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$18.9M |
| 4 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$12.3M |
| 5 |
Amazon
AMZN
|
+$12.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.8M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 9.5% |
| 2 | Healthcare | 7.55% |
| 3 | Technology | 7.01% |
| 4 | Communication Services | 6.66% |
| 5 | Industrials | 5.76% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2876
CALL
Eaton
ETN
$155B
| $16K | ﹤0.01% |
233
+54
| +30% | +$2.92K |
|
2877
PUT
Ezcorp Inc
EZPW
$1.87B
| $16K | ﹤0.01% |
51
+41
| +410% | +$242 |
|
2878
PUT
Five Below
FIVE
$11.5B
| $16K | ﹤0.01% |
186
+49
| +36% | +$1.57K |
|
2879
PUT
Fortinet
FTNT
$112B
| $16K | ﹤0.01% |
170
-120
| -41% | -$862 |
|
2880
PUT
Invesco CurrencyShares Canadian Dollar Trust
FXC
$72.6M
| $16K | ﹤0.01% |
15
-12
| -44% | -$892 |
|
2881
CALL
The Greenbrier Companies
GBX
$1.56B
| $16K | ﹤0.01% |
72
+36
| +100% | +$1.23K |
|
2882
PUT
Huntington Bancshares
HBAN
$34.7B
| $16K | ﹤0.01% |
138
+118
| +590% | +$1.32K |
|
2883
CALL
HSBC
HSBC
$357B
| $16K | ﹤0.01% |
276
-33
| -11% | -$1.17K |
|
2884
iShares Russell 2000 Growth ETF
IWO
$14.4B
| $16K | ﹤0.01% |
118
-11,363
| -99% | -$1.61M |
|
2885
Alliant Energy
LNT
$19.1B
| $16K | ﹤0.01% |
+532
| New | +$16K |
|
2886
PUT
Larimar Therapeutics
LRMR
$398M
| $16K | ﹤0.01% |
8
-7
| -47% | -$1.12K |
|
2887
Direxion Daily Mid Cap Bull 3X ETF
MIDU
$70.8M
| $16K | ﹤0.01% |
794
-277
| -26% | -$6.21K |
|
2888
PUT
MSCI
MSCI
$41.5B
| $16K | ﹤0.01% |
71
+66
| +1,320% | +$4.41K |
|
2889
MACOM Technology Solutions
MTSI
$20.1B
| $16K | ﹤0.01% |
395
-646
| -62% | -$22.5K |
|
2890
PUT
Paycom
PAYC
$7.05B
| $16K | ﹤0.01% |
49
-49
| -50% | -$1.96K |
|
2891
CALL
Royal Gold
RGLD
$17.1B
| $16K | ﹤0.01% |
353
-27
| -7% | -$1.13K |
|
2892
CALL
RH
RH
$3.4B
| $16K | ﹤0.01% |
151
-343
| -69% | -$31.8K |
|
2893
PUT
SolarEdge
SEDG
$2.62B
| $16K | ﹤0.01% |
178
+136
| +324% | +$2.92K |
|
2894
PUT
Sherwin-Williams
SHW
$80.7B
| $16K | ﹤0.01% |
162
-9
| -5% | -$779 |
|
2895
First Trust Cloud Computing ETF
SKYY
$2.78B
| $16K | ﹤0.01% |
+548
| New | +$16.6K |
|
2896
CALL
iShares Silver Trust
SLV
$28.3B
| $16K | ﹤0.01% |
835
+535
| +178% | +$7.54K |
|
2897
CALL
Stellantis
STLA
$16.5B
| $16K | ﹤0.01% |
1,075
+833
| +344% | +$7.82K |
|
2898
Sun Communities
SUI
$15B
| $16K | ﹤0.01% |
244
+192
| +369% | +$12.9K |
|
2899
Direxion Daily 20+ Year Treasury Bull 3X ETF
TMF
$2.29B
| $16K | ﹤0.01% |
91
+29
| +47% | +$5.58K |
|
|
TTSH
2900
DELISTED
Tile Shop Holdings
TTSH
| $16K | ﹤0.01% |
996
+566
| +132% | +$8.59K |
|
Similar funds
Simplex Trading's Q4 2015 Portfolio in Review
As of Q4 2015, Simplex Trading held 7,008 positions worth $1.28B, down 6.4% from $1.36B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading's Q4 2015 filing shows 1,417 new, 1,993 increased, 1,803 reduced and 1,598 closed positions. Its largest new stake was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M. The largest sale was iShares Russell 2000 ETF, an estimated $27.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 9.5% of assets, up from 4.6% a quarter earlier, followed by Healthcare and Technology.
- Simplex Trading's largest Q4 2015 buy was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M.
- Simplex Trading added most to Apple in Q4 2015, an estimated $34.8M increase.
- Simplex Trading's biggest Q4 2015 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $13.8M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q4 2015, selling an estimated $27.5M.
- Simplex Trading's ten largest holdings make up 19% of its $1.28B portfolio in Q4 2015.
- Simplex Trading opened 1,417 new positions and closed 1,598 in Q4 2015.
- Simplex Trading's portfolio value fell 6.4% quarter-over-quarter to $1.28B.
Based on Simplex Trading's 13F filing for Q4 2015, filed 20 Jan 2016.