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 | |
|---|---|---|---|---|---|---|
326
CALL
NXP Semiconductors
NXPI
$70.4B
| $1.17M | 0.05% |
1,913
-676
| -26% | -$75.4K |
|
327
Tyson Foods
TSN
$20.1B
| $1.17M | 0.05% |
16,610
+13,016
| +362% | +$832K |
|
328
Hain Celestial
HAIN
$51.4M
| $1.17M | 0.05% |
28,345
+27,045
| +2,080% | +$1.12M |
|
329
CALL
Trip.com Group
TCOM
$26.8B
| $1.16M | 0.05% |
1,673
-548
| -25% | -$29.8K |
|
330
Vipshop
VIPS
$7.05B
| $1.16M | 0.05% |
132,324
+48,686
| +58% | +$507K |
|
|
ILG
331
DELISTED
ILG, Inc Common Stock
ILG
| $1.16M | 0.05% |
43,512
-86,542
| -67% | -$2.29M |
|
|
PPLC
332
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $1.16M | 0.05% |
2,412
+724
| +43% | +$23.6K |
|
333
American Electric Power
AEP
$72.4B
| $1.16M | 0.05% |
16,530
+15,400
| +1,363% | +$1.1M |
|
334
CALL
Texas Instruments
TXN
$268B
| $1.16M | 0.05% |
1,814
-228
| -11% | -$18.8K |
|
335
PUT
Visa
V
$672B
| $1.15M | 0.05% |
4,980
+232
| +5% | +$23.5K |
|
336
State Street Financial Select Sector SPDR ETF
XLF
$55.3B
| $1.15M | 0.05% |
+44,337
| New | +$1.11M |
|
337
Blackstone
BX
$150B
| $1.14M | 0.05% |
+34,120
| New | +$1.12M |
|
|
BLUE
338
CALL
DELISTED
bluebird bio
BLUE
| $1.13M | 0.05% |
48
+18
| +60% | +$25.1K |
|
|
SINA
339
CALL
DELISTED
Sina Corp
SINA
| $1.13M | 0.05% |
518
-57
| -10% | -$5.76K |
|
340
VanEck Oil Services ETF
OIH
$2.04B
| $1.13M | 0.05% |
2,160
+1,820
| +535% | +$875K |
|
341
PUT
SPDR Gold Trust
GLD
$133B
| $1.13M | 0.05% |
5,970
+2,229
| +60% | +$271K |
|
342
CALL
Abbott
ABT
$175B
| $1.12M | 0.05% |
2,282
-669
| -23% | -$33.6K |
|
343
Hexcel
HXL
$8.04B
| $1.11M | 0.05% |
+19,310
| New | +$1.04M |
|
344
Helmerich & Payne
HP
$3.52B
| $1.09M | 0.04% |
21,032
+6,592
| +46% | +$326K |
|
|
BCR
345
DELISTED
CR Bard Inc.
BCR
| $1.09M | 0.04% |
3,415
+1,625
| +91% | +$520K |
|
346
PUT
JPMorgan Chase
JPM
$926B
| $1.08M | 0.04% |
7,631
-3,695
| -33% | -$341K |
|
347
CALL
MetLife
MET
$60B
| $1.08M | 0.04% |
4,273
+1,640
| +62% | +$79.9K |
|
348
CALL
Phillips 66
PSX
$84.8B
| $1.07M | 0.04% |
1,490
-134
| -8% | -$11.3K |
|
349
PUT
Boeing
BA
$164B
| $1.07M | 0.04% |
5,851
+513
| +10% | +$120K |
|
|
VXX
350
CALL
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $1.06M | 0.04% |
+14,349
| New | +$666K |
|
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.