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 | |
|---|---|---|---|---|---|---|
|
FMI
1926
CALL
DELISTED
Foundation Medicine, Inc.
FMI
| $83K | ﹤0.01% |
80
-419
| -84% | -$15.3K |
|
|
RATE
1927
DELISTED
Bankrate Inc
RATE
| $83K | ﹤0.01% |
6,533
+5,849
| +855% | +$62.8K |
|
|
BHI
1928
PUT
DELISTED
Baker Hughes
BHI
| $83K | ﹤0.01% |
489
+206
| +73% | +$11.8K |
|
|
CIT
1929
PUT
DELISTED
CIT Group Inc.
CIT
| $83K | ﹤0.01% |
1,181
+391
| +49% | +$18K |
|
1930
PUT
ATI
ATI
$27B
| $82K | ﹤0.01% |
204
+26
| +15% | +$437 |
|
1931
PUT
Best Buy
BBY
$18B
| $82K | ﹤0.01% |
571
-562
| -50% | -$30K |
|
1932
Camtek
CAMT
$6.9B
| $82K | ﹤0.01% |
17,013
+15,906
| +1,437% | +$77.3K |
|
1933
CALL
Crown Castle
CCI
$32.7B
| $82K | ﹤0.01% |
253
-67
| -21% | -$6.58K |
|
1934
CALL
FIVE9
FIVN
$1.77B
| $82K | ﹤0.01% |
467
-78
| -14% | -$1.6K |
|
1935
PUT
Kimberly-Clark
KMB
$36.4B
| $82K | ﹤0.01% |
365
-596
| -62% | -$77.5K |
|
1936
Vanguard Small-Cap Growth ETF
VBK
$23.2B
| $82K | ﹤0.01% |
564
+498
| +755% | +$71.4K |
|
1937
CALL
Corpay
CPAY
$24.2B
| $82K | ﹤0.01% |
284
+139
| +96% | +$19.9K |
|
|
PDCE
1938
DELISTED
PDC Energy, Inc.
PDCE
| $82K | ﹤0.01% |
+1,922
| New | +$101K |
|
|
CTXS
1939
PUT
DELISTED
Citrix Systems Inc
CTXS
| $82K | ﹤0.01% |
344
+103
| +43% | +$8.54K |
|
|
ITG
1940
DELISTED
Investment Technology Group Inc
ITG
| $82K | ﹤0.01% |
+3,901
| New | +$79.7K |
|
|
OCLR
1941
PUT
DELISTED
Oclaro Inc.
OCLR
| $82K | ﹤0.01% |
1,189
+136
| +13% | +$1.23K |
|
1942
PUT
ANI Pharmaceuticals
ANIP
$1.77B
| $81K | ﹤0.01% |
87
-424
| -83% | -$20.5K |
|
1943
PUT
Fastenal
FAST
$54B
| $81K | ﹤0.01% |
2,392
+2,120
| +779% | +$23.8K |
|
1944
CALL
H&R Block
HRB
$5.18B
| $81K | ﹤0.01% |
159
-113
| -42% | -$2.97K |
|
1945
CALL
Park Aerospace
PKE
$745M
| $81K | ﹤0.01% |
1,057
+645
| +157% | +$11.2K |
|
1946
CALL
Children's Place
PLCE
$53.6M
| $81K | ﹤0.01% |
213
+162
| +318% | +$17.8K |
|
1947
Verisk Analytics
VRSK
$26.4B
| $81K | ﹤0.01% |
968
-967
| -50% | -$78.3K |
|
|
PE
1948
PUT
DELISTED
PARSLEY ENERGY INC
PE
| $81K | ﹤0.01% |
450
-436
| -49% | -$13K |
|
|
CVRR
1949
DELISTED
CVR Refining, LP
CVRR
| $81K | ﹤0.01% |
8,556
-22,936
| -73% | -$221K |
|
|
AM
1950
DELISTED
ANTERO MIDSTREAM PARTNERS LP
AM
| $81K | ﹤0.01% |
+2,455
| New | +$81.8K |
|
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.