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 | |
|---|---|---|---|---|---|---|
1801
TechnipFMC
FTI
$30.6B
| $58K | ﹤0.01% |
2,732
+348
| +15% | +$8.4K |
|
1802
iShares MBS ETF
MBB
$39B
| $58K | ﹤0.01% |
+543
| New | +$59.1K |
|
1803
CALL
MannKind Corp
MNKD
$1.28B
| $58K | ﹤0.01% |
443
+359
| +427% | +$4.42K |
|
1804
PUT
Qorvo
QRVO
$7.63B
| $58K | ﹤0.01% |
107
+10
| +10% | +$512 |
|
1805
SFL Corp
SFL
$1.59B
| $58K | ﹤0.01% |
+3,505
| New | +$58.8K |
|
|
AVP
1806
DELISTED
Avon Products, Inc.
AVP
| $58K | ﹤0.01% |
14,455
-30,289
| -68% | -$111K |
|
|
AF
1807
DELISTED
Astoria Financial Corporation
AF
| $58K | ﹤0.01% |
3,700
+2,896
| +360% | +$47K |
|
|
BEAV
1808
DELISTED
B/E Aerospace Inc
BEAV
| $58K | ﹤0.01% |
1,381
-31,268
| -96% | -$1.4M |
|
|
OVTI
1809
CALL
DELISTED
OMNIVISION TECHNOLOGIES INC
OVTI
| $58K | ﹤0.01% |
1,018
+444
| +77% | +$12.8K |
|
|
SWFT
1810
PUT
DELISTED
Swift Transportation Company
SWFT
| $58K | ﹤0.01% |
284
+262
| +1,191% | +$3.99K |
|
1811
Banco Macro
BMA
$5.7B
| $57K | ﹤0.01% |
990
-1,661
| -63% | -$90.5K |
|
1812
PUT
Celldex Therapeutics
CLDX
$2.77B
| $57K | ﹤0.01% |
9
-2
| -18% | -$436 |
|
1813
PUT
CSX Corp
CSX
$98.6B
| $57K | ﹤0.01% |
909
-168
| -16% | -$1.52K |
|
|
FOLD
1814
PUT
DELISTED
Amicus Therapeutics
FOLD
| $57K | ﹤0.01% |
242
-153
| -39% | -$1.38K |
|
1815
Foster
FSTR
$443M
| $57K | ﹤0.01% |
4,242
+2,439
| +135% | +$33.2K |
|
1816
Lattice Semiconductor
LSCC
$17.6B
| $57K | ﹤0.01% |
8,836
+6,469
| +273% | +$33.9K |
|
|
PPL
1817
CALL
PPL Corp
PPL
$27.3B
| $57K | ﹤0.01% |
817
+703
| +617% | +$23.7K |
|
1818
PUT
TripAdvisor
TRIP
$1.59B
| $57K | ﹤0.01% |
378
+84
| +29% | +$6.78K |
|
1819
WEC Energy
WEC
$37.7B
| $57K | ﹤0.01% |
1,118
-1,461
| -57% | -$74.6K |
|
|
XYZ
1820
PUT
Block Inc
XYZ
$45.9B
| $57K | ﹤0.01% |
+594
| New | +$7.32K |
|
|
AVTA
1821
PUT
DELISTED
Avantax, Inc. Common Stock
AVTA
| $57K | ﹤0.01% |
307
+270
| +730% | +$2.98K |
|
|
TTPH
1822
CALL
DELISTED
Tetraphase Pharmaceuticals, Inc.
TTPH
| $57K | ﹤0.01% |
25
-21
| -46% | -$4.19K |
|
|
S
1823
PUT
DELISTED
Sprint Corporation
S
| $57K | ﹤0.01% |
329
-749
| -69% | -$3.08K |
|
|
CAM
1824
CALL
DELISTED
CAMERON INTERNATIONAL CORPORATION
CAM
| $57K | ﹤0.01% |
180
+3
| +2% | +$198 |
|
1825
ANI Pharmaceuticals
ANIP
$1.77B
| $56K | ﹤0.01% |
1,261
-2,253
| -64% | -$97K |
|
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.