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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
Apple
AAPL
|
+$29.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$15.7M |
| 4 |
IBM
IBM
|
+$13.8M |
| 5 |
Baidu
BIDU
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$10.1M |
| 2 |
McDonald's
MCD
|
+$8.46M |
| 3 |
Ralph Lauren
RL
|
+$5.36M |
| 4 |
Intel
INTC
|
+$5.04M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.76M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 14.27% |
| 2 | Technology | 10.3% |
| 3 | Healthcare | 7.76% |
| 4 | Consumer Discretionary | 6.32% |
| 5 | Financials | 5.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
126
Chevron
CVX
$384B
| $1.65M | 0.14% |
+17,082
| New | +$1.79M |
|
|
RDS.B
127
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $1.63M | 0.14% |
28,379
+18,689
| +193% | +$1.16M |
|
128
PUT
ProShares UltraShort Health Care
RXD
$3.35M
| $1.62M | 0.14% |
379
+297
| +362% | +$59K |
|
129
CALL
Berkshire Hathaway Class B
BRK.B
$1.06T
| $1.61M | 0.14% |
1,370
-290
| -17% | -$41.4K |
|
130
Teva Pharmaceuticals
TEVA
$36.2B
| $1.61M | 0.13% |
+27,223
| New | +$1.68M |
|
131
Molson Coors Class B
TAP
$7.75B
| $1.59M | 0.13% |
22,745
+12,015
| +112% | +$893K |
|
132
Regeneron Pharmaceuticals
REGN
$70.4B
| $1.57M | 0.13% |
3,079
-435
| -12% | -$212K |
|
|
HSP
133
DELISTED
HOSPIRA INC
HSP
| $1.57M | 0.13% |
17,667
-3,959
| -18% | -$349K |
|
|
VXX
134
PUT
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $1.56M | 0.13% |
291
+147
| +102% | +$47.8K |
|
135
Canadian Pacific Kansas City
CP
$81.5B
| $1.54M | 0.13% |
48,215
+32,725
| +211% | +$1.17M |
|
|
AET
136
CALL
DELISTED
Aetna Inc
AET
| $1.54M | 0.13% |
1,503
+1,304
| +655% | +$149K |
|
|
DRC
137
DELISTED
DRESSER-RAND GROUP INC
DRC
| $1.53M | 0.13% |
17,996
+15,788
| +715% | +$1.32M |
|
138
Duke Energy
DUK
$99.2B
| $1.53M | 0.13% |
21,684
+16,344
| +306% | +$1.24M |
|
139
Diageo
DEO
$47.5B
| $1.52M | 0.13% |
13,095
+2,694
| +26% | +$307K |
|
|
BLUE
140
DELISTED
bluebird bio
BLUE
| $1.51M | 0.13% |
694
+120
| +21% | +$244K |
|
141
CALL
Alibaba
BABA
$279B
| $1.48M | 0.12% |
6,745
-2,477
| -27% | -$213K |
|
142
VanEck Semiconductor ETF
SMH
$70.3B
| $1.47M | 0.12% |
54,032
+39,832
| +281% | +$1.13M |
|
143
W.W. Grainger
GWW
$64.5B
| $1.46M | 0.12% |
6,175
-2,554
| -29% | -$619K |
|
144
Palo Alto Networks
PANW
$274B
| $1.45M | 0.12% |
49,734
+4,770
| +11% | +$127K |
|
145
PUT
Ambarella
AMBA
$3.12B
| $1.44M | 0.12% |
1,165
+292
| +33% | +$25.5K |
|
146
Workday
WDAY
$33.3B
| $1.43M | 0.12% |
18,706
+12,713
| +212% | +$1.08M |
|
|
GMCR
147
DELISTED
KEURIG GREEN MTN INC
GMCR
| $1.41M | 0.12% |
18,433
+1,087
| +6% | +$107K |
|
148
Yum! Brands
YUM
$41.2B
| $1.41M | 0.12% |
21,777
+16,525
| +315% | +$1.05M |
|
149
Coca-Cola
KO
$355B
| $1.41M | 0.12% |
35,836
+25,755
| +255% | +$1.05M |
|
|
150
CALL
Baidu
BIDU
$36.7B
| $1.4M | 0.12% |
2,156
-343
| -14% | -$70.2K |
|
Similar funds
Simplex Trading's Q2 2015 Portfolio in Review
As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.
- Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
- Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
- Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
- Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
- Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
- Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.
Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.