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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
HEES
1351
DELISTED
H&E Equipment Services
HEES
| $100K | 0.01% |
5,749
-13,926
| -71% | -$202K |
|
1352
CALL
Micron Technology
MU
$1.06T
| $100K | 0.01% |
2,244
-352
| -14% | -$3.93K |
|
1353
Tapestry
TPR
$28.8B
| $100K | 0.01% |
2,505
-17,503
| -87% | -$634K |
|
|
SC
1354
PUT
DELISTED
SANTANDER CONSUMER USA HOLDINGS INC
SC
| $100K | 0.01% |
106
-74
| -41% | -$813 |
|
|
VSLR
1355
DELISTED
VIVINT SOLAR, INC.
VSLR
| $100K | 0.01% |
38,037
+33,556
| +749% | +$216K |
|
|
BTU
1356
CALL
DELISTED
PEABODY ENERGY CORP COM STK NEW (DE)
BTU
| $100K | 0.01% |
4,034
+2,818
| +232% | +$10.5K |
|
|
STRZA
1357
DELISTED
Starz - Series A
STRZA
| $100K | 0.01% |
3,802
-23,855
| -86% | -$653K |
|
1358
Clean Energy Fuels
CLNE
$454M
| $99K | 0.01% |
34,126
+29,930
| +713% | +$84.1K |
|
1359
CALL
Illumina
ILMN
$29.4B
| $99K | 0.01% |
152
-103
| -40% | -$15.7K |
|
1360
Dave & Buster's
PLAY
$349M
| $99K | 0.01% |
2,568
+2,549
| +13,416% | +$93.2K |
|
1361
PUT
Royal Bank of Canada
RY
$292B
| $99K | 0.01% |
447
+253
| +130% | +$13.1K |
|
1362
Silicon Motion
SIMO
$9.16B
| $99K | 0.01% |
2,575
-2,081
| -45% | -$67.2K |
|
|
SKX
1363
PUT
DELISTED
Skechers
SKX
| $99K | 0.01% |
245
-382
| -61% | -$11.5K |
|
1364
CALL
YPF
YPF
$20B
| $99K | 0.01% |
1,838
+938
| +104% | +$15.6K |
|
|
OKS
1365
DELISTED
Oneok Partners LP
OKS
| $99K | 0.01% |
+3,162
| New | +$89.1K |
|
|
ARLZ
1366
PUT
DELISTED
Aralez Pharmaceuticals Inc.
ARLZ
| $99K | 0.01% |
+849
| New | +$4.38K |
|
1367
Advanced Micro Devices
AMD
$867B
| $98K | 0.01% |
+34,437
| New | +$78.3K |
|
1368
Armstrong World Industries
AWI
$6.91B
| $98K | 0.01% |
+2,037
| New | +$83.6K |
|
1369
CALL
Dominion Energy
D
$62.8B
| $98K | 0.01% |
280
+184
| +192% | +$13K |
|
1370
Freeport-McMoran
FCX
$89.8B
| $98K | 0.01% |
9,541
-169,410
| -95% | -$1.19M |
|
1371
HP
HPQ
$23.6B
| $98K | 0.01% |
8,000
-18,298
| -70% | -$196K |
|
1372
CALL
Range Resources
RRC
$9.2B
| $98K | 0.01% |
389
+73
| +23% | +$2.03K |
|
1373
PUT
Ulta Beauty
ULTA
$20.6B
| $98K | 0.01% |
276
+62
| +29% | +$10.8K |
|
|
JOBS
1374
DELISTED
51job Inc
JOBS
| $98K | 0.01% |
3,163
+3,063
| +3,063% | +$87.8K |
|
|
DD
1375
CALL
DELISTED
Du Pont De Nemours E I
DD
| $98K | 0.01% |
956
+105
| +12% | +$6.29K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.