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 | |
|---|---|---|---|---|---|---|
1001
Weyerhaeuser
WY
$17.3B
| $167K | 0.01% |
5,571
+274
| +5% | +$8.27K |
|
1002
CALL
Yum! Brands
YUM
$41B
| $167K | 0.01% |
2,245
+188
| +9% | +$9.82K |
|
1003
Conagra Brands
CAG
$7.07B
| $166K | 0.01% |
5,078
-9,481
| -65% | -$303K |
|
1004
Roper Technologies
ROP
$36.3B
| $166K | 0.01% |
+879
| New | +$161K |
|
1005
Southern Company
SO
$110B
| $166K | 0.01% |
3,558
-7,416
| -68% | -$336K |
|
1006
PUT
Sony
SONY
$123B
| $166K | 0.01% |
1,750
+40
| +2% | +$212 |
|
1007
PUT
Teck Resources
TECK
$29.5B
| $166K | 0.01% |
902
+636
| +239% | +$3.15K |
|
|
VNET
1008
PUT
VNET Group
VNET
$2.05B
| $166K | 0.01% |
1,992
+1,066
| +115% | +$21.3K |
|
|
CEQP
1009
DELISTED
Crestwood Equity Partners LP
CEQP
| $166K | 0.01% |
8,036
+7,920
| +6,828% | +$179K |
|
|
LNCE
1010
DELISTED
Snyders-Lance, Inc.
LNCE
| $166K | 0.01% |
4,863
+4,238
| +678% | +$153K |
|
|
MDVN
1011
CALL
DELISTED
MEDIVATION, INC.
MDVN
| $166K | 0.01% |
307
+48
| +19% | +$2.07K |
|
1012
PUT
Vicor
VICR
$9.62B
| $165K | 0.01% |
205
+46
| +29% | +$443 |
|
1013
PUT
Vipshop
VIPS
$6.84B
| $165K | 0.01% |
1,643
+210
| +15% | +$3.68K |
|
|
MIC
1014
DELISTED
Macquarie Infrastructure Holdings, LLC
MIC
| $165K | 0.01% |
+2,280
| New | +$170K |
|
|
DNR
1015
PUT
DELISTED
Denbury Resources, Inc.
DNR
| $165K | 0.01% |
784
+437
| +126% | +$1.41K |
|
1016
Credit Acceptance
CACC
$6B
| $164K | 0.01% |
770
+484
| +169% | +$98.9K |
|
1017
PUT
Chord Energy
CHRD
$7.79B
| $164K | 0.01% |
289
+74
| +34% | +$791 |
|
1018
PUT
Eaton
ETN
$157B
| $164K | 0.01% |
268
-31
| -10% | -$1.68K |
|
1019
PUT
Intel
INTC
$464B
| $164K | 0.01% |
2,854
+1,347
| +89% | +$45.5K |
|
|
JOYY
1020
CALL
JOYY Inc
JOYY
$3.73B
| $164K | 0.01% |
313
+192
| +159% | +$11.4K |
|
1021
CALL
Vanguard S&P 500 ETF
VOO
$968B
| $163K | 0.01% |
636
-683
| -52% | -$129K |
|
1022
Viasat
VSAT
$9.79B
| $163K | 0.01% |
+2,675
| New | +$170K |
|
1023
Boston Properties
BXP
$11B
| $162K | 0.01% |
+1,276
| New | +$159K |
|
1024
CNX Resources
CNX
$4.85B
| $162K | 0.01% |
+24,642
| New | +$174K |
|
1025
PUT
Teva Pharmaceuticals
TEVA
$35.9B
| $162K | 0.01% |
886
-483
| -35% | -$29.8K |
|
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.