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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
CALL
iShares S&P 100 ETF
OEF
$20.2B
| $14.2M | 0.61% |
53,260
+5,413
| +11% | +$559K |
|
27
Altria Group
MO
$122B
| $13.2M | 0.57% |
+184,406
| New | +$13.3M |
|
|
28
PUT
iShares S&P 100 ETF
OEF
$20.2B
| $13.1M | 0.57% |
87,015
+17,297
| +25% | +$1.79M |
|
29
State Street Energy Select Sector SPDR ETF
XLE
$38.7B
| $12.5M | 0.54% |
+356,626
| New | +$12.9M |
|
30
Berkshire Hathaway Class B
BRK.B
$1.06T
| $11.9M | 0.52% |
+71,515
| New | +$12M |
|
31
Direxion Daily Small Cap Bull 3x ETF
TNA
$1.42B
| $11.8M | 0.51% |
223,386
+130,606
| +141% | +$6.79M |
|
32
CALL
Booking.com
BKNG
$139B
| $11.3M | 0.49% |
16,100
-1,675
| -9% | -$111K |
|
33
Bank of America
BAC
$430B
| $11.1M | 0.48% |
+472,345
| New | +$11.2M |
|
34
Colgate-Palmolive
CL
$72.4B
| $10.7M | 0.46% |
+145,573
| New | +$10.2M |
|
35
Expedia Group
EXPE
$31.8B
| $9.25M | 0.4% |
73,306
+72,385
| +7,859% | +$8.84M |
|
|
MJN
36
DELISTED
Mead Johnson Nutrition Company
MJN
| $9.22M | 0.4% |
+103,564
| New | +$8.52M |
|
37
Wynn Resorts
WYNN
$9.82B
| $9.11M | 0.39% |
79,519
+34,083
| +75% | +$3.4M |
|
|
CELG
38
DELISTED
Celgene Corp
CELG
| $9.04M | 0.39% |
72,693
+57,546
| +380% | +$6.89M |
|
|
MON
39
DELISTED
Monsanto Co
MON
| $8.32M | 0.36% |
+73,505
| New | +$8.14M |
|
40
Visa
V
$677B
| $8.1M | 0.35% |
91,155
+35,570
| +64% | +$3.06M |
|
41
Viatris
VTRS
$20.5B
| $7.9M | 0.34% |
202,697
+192,453
| +1,879% | +$7.76M |
|
42
Walt Disney
DIS
$167B
| $7.88M | 0.34% |
69,520
-10,759
| -13% | -$1.18M |
|
43
Western Digital
WDC
$189B
| $7.4M | 0.32% |
118,584
+79,180
| +201% | +$4.55M |
|
44
Intel
INTC
$530B
| $7.39M | 0.32% |
+204,777
| New | +$7.41M |
|
45
CALL
Alphabet (Google) Class A
GOOGL
$4.24T
| $7.2M | 0.31% |
80,260
-12,220
| -13% | -$514K |
|
46
PepsiCo
PEP
$184B
| $7.12M | 0.31% |
+63,683
| New | +$6.83M |
|
47
Mondelez International
MDLZ
$76.8B
| $7.03M | 0.3% |
163,284
-11,699
| -7% | -$518K |
|
48
ExxonMobil
XOM
$629B
| $7M | 0.3% |
+85,394
| New | +$7.13M |
|
49
Macy's
M
$6.26B
| $6.95M | 0.3% |
234,592
+196,898
| +522% | +$6.08M |
|
50
Baidu
BIDU
$36.8B
| $6.92M | 0.3% |
40,133
+22,706
| +130% | +$4M |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.