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 | |
|---|---|---|---|---|---|---|
3251
CALL
Howard Hughes
HHH
$3.96B
| $21K | ﹤0.01% |
+45
| New | +$5.33K |
|
|
HTBK
3252
DELISTED
Heritage Commerce
HTBK
| $21K | ﹤0.01% |
1,582
+1,389
| +720% | +$19.2K |
|
3253
CALL
Hancock Whitney
HWC
$6.11B
| $21K | ﹤0.01% |
+210
| New | +$9.89K |
|
3254
PUT
International Paper
IP
$22.4B
| $21K | ﹤0.01% |
360
-427
| -54% | -$21.6K |
|
3255
CALL
IQVIA
IQV
$35.3B
| $21K | ﹤0.01% |
95
+86
| +956% | +$7.26K |
|
3256
CALL
Kennametal
KMT
$2.67B
| $21K | ﹤0.01% |
89
-158
| -64% | -$6.18K |
|
3257
Kopin
KOPN
$660M
| $21K | ﹤0.01% |
5,738
-23,401
| -80% | -$88K |
|
3258
PUT
Comstock
LODE
$220M
| – | – |
0
| – | – |
|
3259
CALL
La-Z-Boy
LZB
$1.61B
| $21K | ﹤0.01% |
77
-70
| -48% | -$1.97K |
|
3260
PUT
Macerich
MAC
$7.38B
| $21K | ﹤0.01% |
182
+19
| +12% | +$1.15K |
|
3261
CALL
Mercado Libre
MELI
$93B
| $21K | ﹤0.01% |
268
+257
| +2,336% | +$66K |
|
3262
Rockwell Medical
RMTI
$28.5M
| $21K | ﹤0.01% |
25
+20
| +400% | +$16.4K |
|
3263
CALL
Ryanair
RYAAY
$30B
| $21K | ﹤0.01% |
90
-163
| -64% | -$6.47K |
|
3264
CALL
SK Telecom
SKM
$13.6B
| $21K | ﹤0.01% |
144
+124
| +620% | +$4.98K |
|
3265
CALL
Semtech
SMTC
$11.1B
| $21K | ﹤0.01% |
263
+37
| +16% | +$1.3K |
|
|
SOHU
3266
CALL
Sohu.com
SOHU
$343M
| $21K | ﹤0.01% |
87
+72
| +480% | +$3.08K |
|
3267
PUT
STMicroelectronics
STM
$46.6B
| $21K | ﹤0.01% |
430
-525
| -55% | -$8.28K |
|
3268
CALL
Vanguard FTSE Developed Markets ETF
VEA
$226B
| $21K | ﹤0.01% |
346
+328
| +1,822% | +$13.4K |
|
3269
CALL
Wolfspeed
WOLF
$1.18B
| $21K | ﹤0.01% |
308
+182
| +144% | +$4.35K |
|
|
INVX
3270
Innovex International
INVX
$1.85B
| $21K | ﹤0.01% |
440
-19
| -4% | -$980 |
|
|
FRGI
3271
DELISTED
Fiesta Restaurant Group, Inc.
FRGI
| $21K | ﹤0.01% |
1,044
-17,490
| -94% | -$397K |
|
|
BLCM
3272
PUT
DELISTED
Bellicum Pharmaceuticals, Inc.
BLCM
| $21K | ﹤0.01% |
24
+7
| +41% | +$869 |
|
|
AERI
3273
CALL
DELISTED
Aerie Pharmaceuticals
AERI
| $21K | ﹤0.01% |
76
+13
| +21% | +$605 |
|
|
CRR
3274
PUT
DELISTED
Carbo Ceramics Inc.
CRR
| $21K | ﹤0.01% |
66
-105
| -61% | -$863 |
|
|
CRAY
3275
DELISTED
Cray, Inc.
CRAY
| $21K | ﹤0.01% |
1,173
-1,784
| -60% | -$32.9K |
|
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.