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 | Miscellaneous | 51.63% |
| 2 | Consumer Discretionary | 9.7% |
| 3 | Healthcare | 7.81% |
| 4 | Technology | 7.23% |
| 5 | Communication Services | 6.86% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SCHW
301
Charles Schwab
SCHW
$189B
| $713K | 0.06% |
+21,664
| New | +$686K |
|
302
State Street SPDR S&P 500 ETF Trust
SPY
$814B
| $713K | 0.06% |
3,500
-12,735
| -78% | -$2.62M |
|
|
TYNS
303
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $711K | 0.06% |
2,637
-1,957
| -43% | -$57.7K |
|
|
NTI
304
DELISTED
NORTHERN TIER ENERGY LP CLASS A
NTI
| $699K | 0.05% |
27,064
+23,594
| +680% | +$610K |
|
|
RAI
305
DELISTED
Reynolds American Inc
RAI
| $698K | 0.05% |
15,131
+1,035
| +7% | +$47.9K |
|
306
PUT
Union Pacific
UNP
$172B
| $695K | 0.05% |
807
-252
| -24% | -$21.6K |
|
307
PUT
Micron Technology
MU
$1.15T
| $693K | 0.05% |
1,605
-2,736
| -63% | -$43.7K |
|
308
CALL
JD.com
JD
$38.2B
| $692K | 0.05% |
2,584
+77
| +3% | +$2.27K |
|
309
VF Corp
VFC
$5.29B
| $689K | 0.05% |
+11,765
| New | +$734K |
|
|
MMP
310
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $689K | 0.05% |
+10,158
| New | +$658K |
|
311
PUT
Berkshire Hathaway Class B
BRK.B
$1.08T
| $687K | 0.05% |
2,713
+632
| +30% | +$84.8K |
|
|
ATVI
312
CALL
DELISTED
Activision Blizzard
ATVI
| $684K | 0.05% |
691
+138
| +25% | +$4.97K |
|
313
Wabtec
WAB
$47.8B
| $682K | 0.05% |
9,598
+7,815
| +438% | +$624K |
|
314
PUT
Chevron
CVX
$409B
| $677K | 0.05% |
3,157
-343
| -10% | -$30.9K |
|
|
APC
315
PUT
DELISTED
Anadarko Petroleum
APC
| $677K | 0.05% |
605
-1,497
| -71% | -$91.7K |
|
316
CALL
Walt Disney
DIS
$182B
| $670K | 0.05% |
5,565
+1,024
| +23% | +$114K |
|
|
GG.WS.A
317
PUT
DELISTED
GOLDCORP INC SERIES A WARRANTS EXP 5/30/2007
GG.WS.A
| $669K | 0.05% |
1,907
+1,538
| +417% | +$540K |
|
318
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$14.6B
| $667K | 0.05% |
6,312
+4,919
| +353% | +$530K |
|
319
PUT
EOG Resources
EOG
$76.2B
| $667K | 0.05% |
560
-152
| -21% | -$12.3K |
|
|
SUNE
320
PUT
DELISTED
SUNEDISON, INC COM
SUNE
| $664K | 0.05% |
2,589
-2,090
| -45% | -$12.8K |
|
321
PUT
Tronox
TROX
$768M
| $660K | 0.05% |
563
+555
| +6,938% | +$3.06K |
|
322
BHP
BHP
$230B
| $659K | 0.05% |
28,709
+23,159
| +417% | +$619K |
|
323
CALL
ProShares UltraShort Health Care
RXD
$3.06M
| $658K | 0.05% |
1,188
+87
| +8% | +$17.7K |
|
324
PUT
Nike
NKE
$57B
| $654K | 0.05% |
2,925
-1,789
| -38% | -$115K |
|
325
Tapestry
TPR
$24.4B
| $654K | 0.05% |
20,008
-19,482
| -49% | -$606K |
|
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 deployed $39.7M of net new capital in Q4 2015, opening 1,415 new positions and adding to 1,993 existing holdings. Its largest new stake was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M.
By sector, the portfolio is most concentrated in Miscellaneous at 52% of assets, down from 65% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, an estimated $13.8M trimmed.
- 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 1,415 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.