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 | |
|---|---|---|---|---|---|---|
4551
PUT
Commercial Metals
CMC
$7.81B
| $5K | ﹤0.01% |
+47
| New | +$964 |
|
|
CMCM
4552
CALL
Cheetah Mobile
CMCM
$90.6M
| $5K | ﹤0.01% |
21
+11
| +110% | +$571 |
|
4553
CALL
Camden Property Trust
CPT
$11.4B
| $5K | ﹤0.01% |
196
+192
| +4,800% | +$15.8K |
|
4554
PUT
Cenovus Energy
CVE
$51.4B
| $5K | ﹤0.01% |
29
-30
| -51% | -$403 |
|
4555
CALL
Crane NXT
CXT
$3.1B
| $5K | ﹤0.01% |
141
-104
| -42% | -$2.66K |
|
4556
PUT
Diageo
DEO
$49.2B
| $5K | ﹤0.01% |
94
-157
| -63% | -$17.6K |
|
4557
PUT
Quest Diagnostics
DGX
$26B
| $5K | ﹤0.01% |
+17
| New | +$1.62K |
|
4558
PUT
Duluth Holdings
DLTH
$164M
| $5K | ﹤0.01% |
45
-223
| -83% | -$4.96K |
|
|
DQ
4559
Daqo New Energy
DQ
$820M
| $5K | ﹤0.01% |
+1,525
| New | +$7.01K |
|
4560
PUT
Euronet Worldwide
EEFT
$3.13B
| $5K | ﹤0.01% |
+21
| New | +$1.65K |
|
4561
PUT
Edison International
EIX
$31B
| $5K | ﹤0.01% |
132
-13
| -9% | -$986 |
|
4562
CALL
Enanta Pharmaceuticals
ENTA
$366M
| $5K | ﹤0.01% |
40
+32
| +400% | +$997 |
|
4563
CALL
Equinor
EQNR
$90.5B
| $5K | ﹤0.01% |
307
+55
| +22% | +$988 |
|
|
4564
PUT
Equinor
EQNR
$90.5B
| $5K | ﹤0.01% |
122
-70
| -36% | -$1.26K |
|
4565
PUT
Expeditors International
EXPD
$22.4B
| $5K | ﹤0.01% |
28
-50
| -64% | -$2.74K |
|
4566
CALL
Extreme Networks
EXTR
$3.91B
| $5K | ﹤0.01% |
55
+25
| +83% | +$150 |
|
4567
PUT
Franklin Covey
FC
$250M
| $5K | ﹤0.01% |
92
-612
| -87% | -$10.8K |
|
4568
CALL
Fair Isaac
FICO
$32B
| $5K | ﹤0.01% |
20
-172
| -90% | -$21.8K |
|
4569
Fortuna Silver Mines
FSM
$2.57B
| $5K | ﹤0.01% |
1,114
-18,575
| -94% | -$110K |
|
|
FSP
4570
Franklin Street Properties
FSP
$48.9M
| $5K | ﹤0.01% |
+464
| New | +$5.75K |
|
4571
CALL
H.B. Fuller
FUL
$3.1B
| $5K | ﹤0.01% |
+16
| New | +$799 |
|
4572
Genpact
G
$5.9B
| $5K | ﹤0.01% |
204
-1,396
| -87% | -$34K |
|
4573
CALL
GoDaddy
GDDY
$13.4B
| $5K | ﹤0.01% |
130
+99
| +319% | +$3.59K |
|
4574
PUT
Galicia Financial Group
GGAL
$7.85B
| $5K | ﹤0.01% |
251
+157
| +167% | +$5.27K |
|
4575
PUT
Globant
GLOB
$1.54B
| $5K | ﹤0.01% |
94
+76
| +422% | +$2.65K |
|
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.