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 | |
|---|---|---|---|---|---|---|
1501
PUT
Plains GP Holdings
PAGP
$5.24B
| $130K | 0.01% |
162
-109
| -40% | -$2.59K |
|
1502
Snap-on
SNA
$20.9B
| $130K | 0.01% |
+879
| New | +$132K |
|
1503
Vermilion Energy
VET
$1.72B
| $130K | 0.01% |
+3,680
| New | +$121K |
|
|
ACIA
1504
DELISTED
Acacia Communications Inc
ACIA
| $130K | 0.01% |
2,768
-20,248
| -88% | -$904K |
|
|
JKS
1505
PUT
JinkoSolar
JKS
$780M
| $129K | 0.01% |
416
+161
| +63% | +$4.19K |
|
|
SEM
1506
DELISTED
Select Medical
SEM
| $129K | 0.01% |
+12,565
| New | +$116K |
|
1507
PUT
Valero Energy
VLO
$89.7B
| $129K | 0.01% |
1,562
+56
| +4% | +$3.86K |
|
|
STI
1508
CALL
DELISTED
SunTrust Banks, Inc.
STI
| $129K | 0.01% |
115
-435
| -79% | -$24.6K |
|
1509
PUT
WisdomTree US Total Dividend Fund
DTD
$1.65B
| $128K | 0.01% |
4,448
+1,372
| +45% | +$59K |
|
1510
CALL
Energy Transfer Partners
ET
$70.3B
| $128K | 0.01% |
3,240
+342
| +12% | +$5.98K |
|
1511
CALL
Huntsman Corp
HUN
$2.25B
| $128K | 0.01% |
1,161
-974
| -46% | -$26K |
|
|
ONC
1512
BeOne Medicines Ltd
ONC
$33.9B
| $128K | 0.01% |
+1,242
| New | +$92.5K |
|
|
EMWP
1513
PUT
DELISTED
Eros Media World PLC
EMWP
| $128K | 0.01% |
27
-1
| -4% | -$224 |
|
1514
PUT
Campbell Soup
CPB
$6.5B
| $127K | 0.01% |
358
+176
| +97% | +$8.91K |
|
1515
Keysight
KEYS
$54B
| $127K | 0.01% |
3,062
-3,890
| -56% | -$159K |
|
1516
CALL
Liberty Latin America Class C
LILAK
$1.5B
| $127K | 0.01% |
2,373
+1,016
| +75% | +$21.7K |
|
1517
Rithm Capital
RITM
$5.09B
| $127K | 0.01% |
7,641
-18,041
| -70% | -$296K |
|
|
AVP
1518
PUT
DELISTED
Avon Products, Inc.
AVP
| $127K | 0.01% |
1,474
+1,123
| +320% | +$3.33K |
|
|
BHR
1519
Braemar Hotels & Resorts
BHR
$153M
| $126K | 0.01% |
+13,471
| New | +$132K |
|
1520
PUT
Lexicon Pharmaceuticals
LXRX
$1.02B
| $126K | 0.01% |
604
+439
| +266% | +$6.48K |
|
1521
PUT
MetLife
MET
$60.7B
| $126K | 0.01% |
1,453
-2,015
| -58% | -$98.1K |
|
1522
CALL
Rio Tinto
RIO
$148B
| $126K | 0.01% |
712
-407
| -36% | -$18.9K |
|
1523
CALL
SolarEdge
SEDG
$2.58B
| $126K | 0.01% |
314
+120
| +62% | +$3.02K |
|
1524
PUT
TJX Companies
TJX
$171B
| $126K | 0.01% |
2,450
-366
| -13% | -$13K |
|
1525
KKR & Co
KKR
$88.8B
| $125K | 0.01% |
+6,175
| New | +$117K |
|
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.