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 | |
|---|---|---|---|---|---|---|
3401
National CineMedia
NCMI
$371M
| $9K | ﹤0.01% |
+60
| New | +$8.9K |
|
3402
PUT
NextEra Energy
NEE
$186B
| $9K | ﹤0.01% |
560
+128
| +30% | +$3.24K |
|
|
NOAH
3403
Noah Holdings
NOAH
$594M
| $9K | ﹤0.01% |
+336
| New | +$9.79K |
|
3404
CALL
Nu Skin
NUS
$255M
| $9K | ﹤0.01% |
102
+49
| +92% | +$1.81K |
|
|
NVO
3405
CALL
Novo Nordisk
NVO
$225B
| $9K | ﹤0.01% |
132
-1,170
| -90% | -$32.4K |
|
3406
PUT
Omega Healthcare
OHI
$15.4B
| $9K | ﹤0.01% |
165
-106
| -39% | -$3.66K |
|
3407
CALL
Paychex
PAYX
$42.3B
| $9K | ﹤0.01% |
106
-19
| -15% | -$993 |
|
3408
PUT
PBF Energy
PBF
$7.22B
| $9K | ﹤0.01% |
188
+11
| +6% | +$388 |
|
3409
Pinnacle West Capital
PNW
$12.8B
| $9K | ﹤0.01% |
+155
| New | +$9.86K |
|
|
PPL
3410
PUT
PPL Corp
PPL
$27.3B
| $9K | ﹤0.01% |
68
+42
| +162% | +$1.42K |
|
|
PRA
3411
DELISTED
ProAssurance
PRA
| $9K | ﹤0.01% |
+200
| New | +$10.3K |
|
3412
PUT
Restaurant Brands International
QSR
$26B
| $9K | ﹤0.01% |
51
-95
| -65% | -$3.49K |
|
3413
PUT
Rockwell Automation
ROK
$52.4B
| $9K | ﹤0.01% |
99
+18
| +22% | +$1.89K |
|
3414
CALL
Ryanair
RYAAY
$31.1B
| $9K | ﹤0.01% |
68
+51
| +300% | +$1.67K |
|
3415
CALL
Sensata Technologies
ST
$6.8B
| $9K | ﹤0.01% |
30
-135
| -82% | -$6.21K |
|
3416
CALL
Tenet Healthcare
THC
$22.6B
| $9K | ﹤0.01% |
171
-6
| -3% | -$197 |
|
3417
PUT
Travel + Leisure Co
TNL
$4.81B
| $9K | ﹤0.01% |
135
+29
| +27% | +$1K |
|
3418
PUT
TherapeuticsMD
TXMD
$23.8M
| $9K | ﹤0.01% |
6
+4
| +200% | +$1.48K |
|
3419
PUT
Travelzoo
TZOO
$77.8M
| $9K | ﹤0.01% |
+56
| New | +$493 |
|
3420
PUT
Vince Holding Corp
VNCE
$77.6M
| $9K | ﹤0.01% |
11
+10
| +1,000% | +$450 |
|
|
VRNT
3421
DELISTED
Verint Systems
VRNT
| $9K | ﹤0.01% |
471
-3,292
| -87% | -$74.7K |
|
3422
CALL
NCR Voyix
VYX
$1.19B
| $9K | ﹤0.01% |
668
-1,066
| -61% | -$17K |
|
3423
WaFd
WAFD
$2.71B
| $9K | ﹤0.01% |
+414
| New | +$10.2K |
|
3424
Energous
WATT
$72.8M
| $9K | ﹤0.01% |
+2
| New | +$8.87K |
|
3425
CALL
Wendy's
WEN
$1.46B
| $9K | ﹤0.01% |
+307
| New | +$3.02K |
|
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.