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 |
Amazon
AMZN
|
+$45.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$30.1M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$25.8M |
| 4 |
Booking.com
BKNG
|
+$22.5M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$17.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$43.6M |
| 2 |
Amgen
AMGN
|
+$33.2M |
| 3 |
Baidu
BIDU
|
+$19.3M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$17.3M |
| 5 |
Micron Technology
MU
|
+$17.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 14.31% |
| 2 | Technology | 13.17% |
| 3 | Communication Services | 11.81% |
| 4 | Healthcare | 4.06% |
| 5 | Financials | 3.84% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
EFOR
2526
Everforth Inc
EFOR
$845M
| $39K | ﹤0.01% |
+737
| New | +$36.9K |
|
2527
Carriage Services
CSV
$618M
| $39K | ﹤0.01% |
1,541
-13,512
| -90% | -$338K |
|
2528
Camping World
CWH
$363M
| $39K | ﹤0.01% |
+971
| New | +$33.7K |
|
2529
Douglas Emmett
DEI
$2.06B
| $39K | ﹤0.01% |
+1,010
| New | +$38.7K |
|
2530
PUT
Dollar General
DG
$25.9B
| $39K | ﹤0.01% |
490
+229
| +88% | +$17.2K |
|
|
EXAS
2531
PUT
DELISTED
Exact Sciences
EXAS
| $39K | ﹤0.01% |
607
+1
| +0.2% | +$40 |
|
2532
CALL
Fortive
FTV
$19B
| $39K | ﹤0.01% |
488
-118
| -19% | -$4.91K |
|
2533
CALL
HP
HPQ
$23.5B
| $39K | ﹤0.01% |
434
+276
| +175% | +$5.25K |
|
2534
PUT
JetBlue
JBLU
$1.96B
| $39K | ﹤0.01% |
148
-348
| -70% | -$7.29K |
|
2535
Lantheus
LNTH
$6.82B
| $39K | ﹤0.01% |
+2,196
| New | +$38.6K |
|
|
NVO
2536
CALL
Novo Nordisk
NVO
$216B
| $39K | ﹤0.01% |
444
+204
| +85% | +$4.61K |
|
2537
CALL
Range Resources
RRC
$9.11B
| $39K | ﹤0.01% |
1,060
+114
| +12% | +$2.2K |
|
2538
CALL
Gentherm
THRM
$1.31B
| $39K | ﹤0.01% |
128
-51
| -28% | -$1.75K |
|
2539
CALL
Toll Brothers
TOL
$14B
| $39K | ﹤0.01% |
122
-18
| -13% | -$708 |
|
2540
CALL
ZTO Express
ZTO
$18.2B
| $39K | ﹤0.01% |
606
-220
| -27% | -$3.17K |
|
|
ROIC
2541
DELISTED
Retail Opportunity Investments Corp.
ROIC
| $39K | ﹤0.01% |
+2,065
| New | +$41K |
|
|
HA
2542
PUT
DELISTED
Hawaiian Holdings, Inc.
HA
| $39K | ﹤0.01% |
58
-140
| -71% | -$5.94K |
|
|
SRC
2543
DELISTED
SPIRIT REALTY CAPITAL, INC.
SRC
| $39K | ﹤0.01% |
1,015
-3,509
| -78% | -$130K |
|
|
NSH
2544
DELISTED
NuStar GP Holdings LLC
NSH
| $39K | ﹤0.01% |
1,806
-986
| -35% | -$22.1K |
|
|
GRN
2545
PUT
DELISTED
iPath Global Carbon ETN
GRN
| $39K | ﹤0.01% |
353
-74
| -17% | -$537 |
|
|
BOBE
2546
CALL
DELISTED
Bob Evans Farms, Inc.
BOBE
| $39K | ﹤0.01% |
38
-88
| -70% | -$6.07K |
|
2547
CALL
Agilent Technologies
A
$39.1B
| $38K | ﹤0.01% |
78
-426
| -85% | -$26.5K |
|
2548
PUT
Alkermes
ALKS
$8.82B
| $38K | ﹤0.01% |
506
+297
| +142% | +$15.9K |
|
2549
PUT
Compass Minerals
CMP
$1.24B
| $38K | ﹤0.01% |
187
+120
| +179% | +$8.02K |
|
2550
CALL
Digital Realty Trust
DLR
$73.7B
| $38K | ﹤0.01% |
169
-59
| -26% | -$6.82K |
|
Similar funds
Simplex Trading's Q3 2017 Portfolio in Review
As of Q3 2017, Simplex Trading held 7,357 positions worth $2.45B, up 6.4% from $2.3B the previous quarter. Its ten largest holdings account for 24% of the portfolio.
Simplex Trading's Q3 2017 filing shows 1,313 new, 2,078 increased, 2,339 reduced and 1,500 closed positions. Its largest new stake was iShares Russell 2000 ETF: 214,170 shares worth $31.7M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $43.6M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 14% of assets, up from 9.7% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q3 2017 buy was iShares Russell 2000 ETF: 214,170 shares worth $31.7M.
- Simplex Trading added most to Amazon in Q3 2017, an estimated $45.9M increase.
- Simplex Trading's biggest Q3 2017 reduction was Baidu, cutting an estimated $19.3M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q3 2017, selling an estimated $43.6M.
- Simplex Trading's ten largest holdings make up 24% of its $2.45B portfolio in Q3 2017.
- Simplex Trading opened 1,313 new positions and closed 1,500 in Q3 2017.
- Simplex Trading's portfolio value rose 6.4% quarter-over-quarter to $2.45B.
Based on Simplex Trading's 13F filing for Q3 2017, filed 25 Oct 2017.