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 | |
|---|---|---|---|---|---|---|
876
PUT
Trip.com Group
TCOM
$27.5B
| $201K | 0.02% |
1,644
-634
| -28% | -$29K |
|
|
SUNE
877
CALL
DELISTED
SUNEDISON, INC COM
SUNE
| $201K | 0.02% |
4,379
-2,854
| -39% | -$17.5K |
|
878
Fluor
FLR
$7.29B
| $200K | 0.02% |
4,245
+54
| +1% | +$2.54K |
|
879
PUT
Nu Skin
NUS
$247M
| $200K | 0.02% |
371
+135
| +57% | +$4.97K |
|
880
O'Reilly Automotive
ORLY
$72.4B
| $200K | 0.02% |
+11,865
| New | +$206K |
|
881
CALL
Kraft Heinz
KHC
$30.4B
| $199K | 0.02% |
1,048
+418
| +66% | +$30.8K |
|
882
CALL
Neurocrine Biosciences
NBIX
$17.7B
| $199K | 0.02% |
188
-41
| -18% | -$2.08K |
|
|
MNK
883
PUT
DELISTED
MALLINCKRODT PUBLIC LIMITED COMPANY
MNK
| $199K | 0.02% |
438
-327
| -43% | -$22K |
|
884
APA Corp
APA
$12.8B
| $198K | 0.02% |
4,469
-30,818
| -87% | -$1.44M |
|
885
Ionis Pharmaceuticals
IONS
$9.35B
| $198K | 0.02% |
3,204
-2,273
| -42% | -$123K |
|
|
886
CALL
O'Reilly Automotive
ORLY
$72.4B
| $198K | 0.02% |
2,355
+750
| +47% | +$13K |
|
|
SNP
887
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $198K | 0.02% |
+3,309
| New | +$219K |
|
888
PUT
Genesis Energy
GEL
$1.84B
| $197K | 0.02% |
195
+97
| +99% | +$3.76K |
|
|
JOYY
889
PUT
JOYY Inc
JOYY
$3.73B
| $197K | 0.02% |
481
-16
| -3% | -$952 |
|
|
SHLM
890
DELISTED
Schulman (A.) Inc
SHLM
| $197K | 0.02% |
6,444
-817
| -11% | -$27.5K |
|
|
SNDK
891
PUT
DELISTED
SANDISK CORP
SNDK
| $197K | 0.02% |
564
-204
| -27% | -$14.9K |
|
892
PUT
Ovintiv
OVV
$17.7B
| $196K | 0.02% |
108
+20
| +23% | +$731 |
|
893
Terex
TEX
$7.98B
| $196K | 0.02% |
10,640
-13,989
| -57% | -$276K |
|
894
PUT
Wheaton Precious Metals
WPM
$50.6B
| $196K | 0.02% |
415
+138
| +50% | +$1.82K |
|
|
WFM
895
CALL
DELISTED
Whole Foods Market Inc
WFM
| $196K | 0.02% |
1,285
+767
| +148% | +$24.4K |
|
896
Freshpet
FRPT
$2.83B
| $195K | 0.02% |
23,044
+20,563
| +829% | +$179K |
|
897
Kayne Anderson Energy Infrastructure Fund
KYN
$2.52B
| $195K | 0.02% |
11,312
+9,607
| +563% | +$191K |
|
898
CALL
Lowe's Companies
LOW
$116B
| $195K | 0.02% |
480
+88
| +22% | +$6.53K |
|
899
Tronox
TROX
$995M
| $195K | 0.02% |
+49,999
| New | +$275K |
|
900
Direxion Daily Financial Bull 3x ETF
FAS
$2.4B
| $194K | 0.02% |
6,689
+2,818
| +73% | +$83.9K |
|
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.