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 | |
|---|---|---|---|---|---|---|
201
CALL
iShares MSCI Australia ETF
EWA
$1.34B
| $1.77M | 0.08% |
12,449
+3,694
| +42% | +$81.1K |
|
|
CAB
202
DELISTED
Cabela's Inc
CAB
| $1.77M | 0.08% |
29,735
-5,793
| -16% | -$320K |
|
203
Vale
VALE
$60B
| $1.76M | 0.08% |
201,752
-152,384
| -43% | -$1.3M |
|
204
Service Corp International
SCI
$10.7B
| $1.76M | 0.08% |
52,715
+29,032
| +123% | +$925K |
|
205
PUT
NetEase
NTES
$82.9B
| $1.75M | 0.08% |
7,920
+3,985
| +101% | +$229K |
|
|
206
CALL
Gilead Sciences
GILD
$165B
| $1.75M | 0.08% |
7,189
+927
| +15% | +$61.7K |
|
207
Southwest Airlines
LUV
$23.8B
| $1.72M | 0.07% |
+27,726
| New | +$1.61M |
|
208
Microchip Technology
MCHP
$45.3B
| $1.7M | 0.07% |
44,156
-41,152
| -48% | -$1.62M |
|
|
SHNY
209
PUT
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $1.7M | 0.07% |
+5,413
| New | +$63.9K |
|
210
Northrop Grumman
NOC
$74.4B
| $1.68M | 0.07% |
6,555
-15,381
| -70% | -$3.85M |
|
211
Autoliv
ALV
$8.61B
| $1.68M | 0.07% |
21,195
+20,248
| +2,138% | +$1.53M |
|
212
Hershey
HSY
$34.8B
| $1.67M | 0.07% |
+15,519
| New | +$1.71M |
|
213
Bristol-Myers Squibb
BMY
$124B
| $1.64M | 0.07% |
+29,429
| New | +$1.6M |
|
|
UWC
214
CALL
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $1.63M | 0.07% |
1,017
+210
| +26% | +$337K |
|
|
TWX
215
DELISTED
Time Warner Inc
TWX
| $1.63M | 0.07% |
+16,236
| New | +$1.61M |
|
|
BPL
216
DELISTED
Buckeye Partners, L.P.
BPL
| $1.63M | 0.07% |
25,428
+24,439
| +2,471% | +$1.61M |
|
217
BHP
BHP
$212B
| $1.62M | 0.07% |
51,040
+12,344
| +32% | +$391K |
|
|
CEO
218
DELISTED
CNOOC Limited
CEO
| $1.62M | 0.07% |
14,800
+6,988
| +89% | +$802K |
|
219
PVH
PVH
$3.56B
| $1.61M | 0.07% |
+14,092
| New | +$1.46M |
|
220
PUT
Chevron
CVX
$381B
| $1.61M | 0.07% |
4,372
+1,869
| +75% | +$198K |
|
|
KW
221
DELISTED
Kennedy-Wilson Holdings
KW
| $1.6M | 0.07% |
84,107
+79,485
| +1,720% | +$1.61M |
|
222
Trip.com Group
TCOM
$27.5B
| $1.6M | 0.07% |
29,724
-5,876
| -17% | -$312K |
|
223
Molson Coors Class B
TAP
$7.8B
| $1.6M | 0.07% |
18,492
+14,818
| +403% | +$1.37M |
|
224
PUT
Under Armour Class C
UA
$3.04B
| $1.59M | 0.07% |
4,931
+475
| +11% | +$8.95K |
|
|
ALR
225
DELISTED
Alere Inc
ALR
| $1.59M | 0.07% |
31,747
+24,222
| +322% | +$1.17M |
|
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.