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 | |
|---|---|---|---|---|---|---|
|
HRC
1626
DELISTED
HILL-ROM HOLDINGS, INC.
HRC
| $111K | ﹤0.01% |
1,505
+1,076
| +251% | +$82.9K |
|
|
TRCO
1627
CALL
DELISTED
TRIBUNE MEDIA COMPANY CLASS A
TRCO
| $111K | ﹤0.01% |
587
+10
| +2% | +$406 |
|
|
CCRN
1628
DELISTED
Cross Country Healthcare
CCRN
| $110K | ﹤0.01% |
7,757
-5,275
| -40% | -$66.1K |
|
1629
PUT
Hormel Foods
HRL
$13.9B
| $110K | ﹤0.01% |
392
+46
| +13% | +$1.5K |
|
1630
Invesco Dorsey Wright Momentum ETF
PDP
$1.5B
| $110K | ﹤0.01% |
2,276
+1,487
| +188% | +$71.3K |
|
|
PRO
1631
DELISTED
PROS Holdings
PRO
| $110K | ﹤0.01% |
+4,561
| New | +$121K |
|
1632
PUT
Sinclair Inc
SBGI
$974M
| $110K | ﹤0.01% |
266
-521
| -66% | -$16.3K |
|
1633
Global X Uranium ETF
URA
$5.52B
| $110K | ﹤0.01% |
8,287
-3,361
| -29% | -$46.3K |
|
1634
PUT
Vanguard S&P 500 ETF
VOO
$968B
| $110K | ﹤0.01% |
570
-443
| -44% | -$100K |
|
|
TBNK
1635
DELISTED
Territorial Bancorp Inc.
TBNK
| $110K | ﹤0.01% |
+3,495
| New | +$105K |
|
|
SXCP
1636
DELISTED
SunCoke Energy Partners, L.P.
SXCP
| $110K | ﹤0.01% |
6,404
-13,308
| -68% | -$233K |
|
1637
PUT
BHP
BHP
$213B
| $109K | ﹤0.01% |
1,122
+175
| +18% | +$6.4K |
|
1638
iShares US Medical Devices ETF
IHI
$3.02B
| $109K | ﹤0.01% |
3,924
-30,840
| -89% | -$853K |
|
1639
PUT
Alcoa
AA
$11.7B
| $108K | ﹤0.01% |
1,775
+466
| +36% | +$18.6K |
|
1640
Barclays
BCS
$94.1B
| $108K | ﹤0.01% |
11,002
+2,335
| +27% | +$23.1K |
|
1641
CALL
Corcept Therapeutics
CORT
$10.2B
| $108K | ﹤0.01% |
349
-471
| -57% | -$7.02K |
|
1642
CALL
Duke Energy
DUK
$102B
| $108K | ﹤0.01% |
839
-508
| -38% | -$43.5K |
|
|
FENG
1643
Phoenix New Media
FENG
$16.8M
| $108K | ﹤0.01% |
3,063
+2,982
| +3,681% | +$69.5K |
|
1644
MarineMax
HZO
$800M
| $108K | ﹤0.01% |
6,567
+2,951
| +82% | +$48.1K |
|
1645
CALL
Meritage Homes
MTH
$4.87B
| $108K | ﹤0.01% |
498
-350
| -41% | -$7.31K |
|
1646
NNN REIT
NNN
$9.39B
| $108K | ﹤0.01% |
2,598
-253
| -9% | -$10.3K |
|
1647
PUT
Impinj
PI
$3.89B
| $108K | ﹤0.01% |
584
+59
| +11% | +$2.48K |
|
1648
CALL
Signet Jewelers
SIG
$3.55B
| $108K | ﹤0.01% |
758
+521
| +220% | +$32.1K |
|
1649
CALL
Tyson Foods
TSN
$20.2B
| $108K | ﹤0.01% |
197
-160
| -45% | -$10.2K |
|
1650
CALL
VF Corp
VFC
$6.68B
| $108K | ﹤0.01% |
267
-510
| -66% | -$29.4K |
|
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.