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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3076
CALL
CarGurus
CARG
$3.01B
| $436K | ﹤0.01% |
172
+58
| +51% | +$1.35K |
|
3077
CALL
DaVita
DVA
$15.1B
| $435K | ﹤0.01% |
55
-179
| -76% | -$14K |
|
3078
CALL
KBR
KBR
$4.68B
| $435K | ﹤0.01% |
193
+156
| +422% | +$3.39K |
|
3079
CALL
Opko Health
OPK
$921M
| $434K | ﹤0.01% |
1,274
-1,236
| -49% | -$2.77K |
|
3080
LendingTree
TREE
$544M
| $433K | ﹤0.01% |
1,497
-1,754
| -54% | -$424K |
|
3081
iShares MSCI Canada ETF
EWC
$6.04B
| $432K | ﹤0.01% |
16,718
-18,196
| -52% | -$445K |
|
3082
PUT
LoveSac
LOVE
$239M
| $432K | ﹤0.01% |
165
+142
| +617% | +$2.16K |
|
3083
CALL
MDU Resources
MDU
$4.44B
| $432K | ﹤0.01% |
513
-152
| -23% | -$1.26K |
|
|
VER
3084
CALL
DELISTED
VEREIT, Inc.
VER
| $432K | ﹤0.01% |
135
+85
| +170% | +$2.37K |
|
|
BAND
3085
CALL
Bandwidth Inc
BAND
$1.91B
| $431K | ﹤0.01% |
34
+29
| +580% | +$2.93K |
|
3086
CALL
Omeros
OMER
$709M
| $431K | ﹤0.01% |
293
+67
| +30% | +$1K |
|
3087
TG Therapeutics
TGTX
$8.58B
| $431K | ﹤0.01% |
22,134
+15,877
| +254% | +$256K |
|
|
CYBR
3088
DELISTED
CyberArk
CYBR
| $430K | ﹤0.01% |
4,334
+1,621
| +60% | +$158K |
|
3089
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$6.58B
| $430K | ﹤0.01% |
10,300
+8,700
| +544% | +$319K |
|
3090
PUT
Ameren
AEE
$31.5B
| $429K | ﹤0.01% |
61
+46
| +307% | +$3.33K |
|
3091
PUT
Monster Beverage
MNST
$91.4B
| $429K | ﹤0.01% |
124
-1,240
| -91% | -$40.5K |
|
3092
PUT
Open Text
OTEX
$5.43B
| $429K | ﹤0.01% |
101
-96
| -49% | -$3.81K |
|
3093
PUT
Zymeworks
ZYME
$1.68B
| $429K | ﹤0.01% |
119
+85
| +250% | +$3.13K |
|
|
CONE
3094
PUT
DELISTED
CyrusOne Inc Common Stock
CONE
| $429K | ﹤0.01% |
59
+7
| +13% | +$498 |
|
3095
iShare MSCI Eurozone ETF
EZU
$9.41B
| $428K | ﹤0.01% |
11,754
+10,901
| +1,278% | +$365K |
|
3096
CALL
Hancock Whitney
HWC
$6.13B
| $428K | ﹤0.01% |
202
+200
| +10,000% | +$4.13K |
|
3097
PUT
Newmark Group
NMRK
$2.73B
| $428K | ﹤0.01% |
882
+30
| +4% | +$126 |
|
3098
PUT
Rollins
ROL
$18.6B
| $428K | ﹤0.01% |
152
-27
| -15% | -$723 |
|
|
PRAH
3099
CALL
DELISTED
PRA Health Sciences, Inc.
PRAH
| $428K | ﹤0.01% |
44
-45
| -51% | -$4.19K |
|
3100
PUT
Huntington Bancshares
HBAN
$35.1B
| $427K | ﹤0.01% |
473
-355
| -43% | -$3.14K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.