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
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
726
Dick's Sporting Goods
DKS
$18.8B
| $435K | 0.02% |
10,934
-41,895
| -79% | -$1.89M |
|
727
CALL
General Dynamics
GD
$101B
| $435K | 0.02% |
644
+266
| +70% | +$52.1K |
|
728
Investcorp Credit Management BDC
ICMB
$11.2M
| $435K | 0.02% |
+43,839
| New | +$449K |
|
729
PUT
Yelp
YELP
$1.36B
| $434K | 0.02% |
2,610
+2,243
| +611% | +$70K |
|
|
XENT
730
CALL
DELISTED
Intersect ENT, Inc
XENT
| $434K | 0.02% |
+296
| New | +$6.7K |
|
|
WFM
731
DELISTED
Whole Foods Market Inc
WFM
| $434K | 0.02% |
10,319
-58,952
| -85% | -$2.15M |
|
732
CALL
Five Below
FIVE
$11.3B
| $433K | 0.02% |
803
+259
| +48% | +$12.8K |
|
|
FCE.A
733
DELISTED
Forest City Realty Trust, Inc.
FCE.A
| $431K | 0.02% |
+17,837
| New | +$411K |
|
734
PUT
Charter Communications
CHTR
$15.9B
| $430K | 0.02% |
545
-240
| -31% | -$80.1K |
|
|
DISH
735
PUT
DELISTED
DISH Network Corp.
DISH
| $430K | 0.02% |
1,729
+1,007
| +139% | +$63.5K |
|
|
B
736
CALL
Barrick Mining
B
$62.8B
| $429K | 0.02% |
1,475
-2,523
| -63% | -$43.2K |
|
737
PUT
Valero Energy
VLO
$92.3B
| $429K | 0.02% |
1,506
+686
| +84% | +$44.5K |
|
738
PUT
Delta Air Lines
DAL
$54.9B
| $427K | 0.02% |
3,687
+1,803
| +96% | +$88.3K |
|
739
Inogen
INGN
$176M
| $425K | 0.02% |
4,459
+1,667
| +60% | +$142K |
|
740
PUT
Boeing
BA
$164B
| $424K | 0.02% |
5,338
-2,901
| -35% | -$540K |
|
741
PUT
AbbVie
ABBV
$448B
| $423K | 0.02% |
3,309
+1,078
| +48% | +$72.5K |
|
742
PUT
Union Pacific
UNP
$174B
| $423K | 0.02% |
1,482
-2,757
| -65% | -$301K |
|
|
GOOS
743
Canada Goose Holdings
GOOS
$952M
| $422K | 0.02% |
21,374
+11,664
| +120% | +$216K |
|
744
PUT
ProShares Ultra S&P500
SSO
$8.02B
| $422K | 0.02% |
31,800
+14,688
| +86% | +$161K |
|
745
PUT
Incyte
INCY
$23.1B
| $421K | 0.02% |
565
+455
| +414% | +$57.9K |
|
746
CALL
NetEase
NTES
$77.6B
| $421K | 0.02% |
1,810
+75
| +4% | +$4.3K |
|
|
CS
747
DELISTED
Credit Suisse Group
CS
| $421K | 0.02% |
28,872
-4,696
| -14% | -$67.8K |
|
748
CALL
Bath & Body Works
BBWI
$4.04B
| $420K | 0.02% |
1,724
+950
| +123% | +$38.9K |
|
|
MOMO
749
PUT
Hello Group
MOMO
$876M
| $419K | 0.02% |
1,213
+623
| +106% | +$23.9K |
|
750
Sinclair Inc
SBGI
$999M
| $419K | 0.02% |
+12,741
| New | +$458K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.