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 | |
|---|---|---|---|---|---|---|
|
26
PUT
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $311M | 0.5% |
12,058
+1,080
| +10% | +$266K |
|
27
CALL
Microsoft
MSFT
$2.95T
| $301M | 0.48% |
14,792
-5,882
| -28% | -$1.07M |
|
28
CALL
Boeing
BA
$161B
| $293M | 0.47% |
15,986
+423
| +3% | +$65K |
|
|
29
PUT
Netflix
NFLX
$286B
| $290M | 0.46% |
63,650
+18,070
| +40% | +$769K |
|
30
PUT
VanEck Gold Miners ETF
GDX
$22.7B
| $286M | 0.46% |
58,473
-3,385
| -5% | -$111K |
|
|
31
CALL
Netflix
NFLX
$286B
| $255M | 0.41% |
56,130
+15,590
| +38% | +$664K |
|
32
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $248M | 0.4% |
38,917
+11,367
| +41% | +$1,000K |
|
33
CALL
Alphabet (Google) Class A
GOOGL
$4.24T
| $245M | 0.39% |
34,660
-17,720
| -34% | -$1.19M |
|
|
34
PUT
NVIDIA
NVDA
$5.02T
| $235M | 0.37% |
246,960
-69,440
| -22% | -$562K |
|
|
35
CALL
NVIDIA
NVDA
$5.02T
| $193M | 0.31% |
203,600
-168,840
| -45% | -$1.37M |
|
|
36
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $189M | 0.3% |
7,325
-2,121
| -22% | -$522K |
|
37
PUT
Chipotle Mexican Grill
CMG
$42.7B
| $178M | 0.28% |
84,700
-34,950
| -29% | -$647K |
|
|
38
CALL
VanEck Gold Miners ETF
GDX
$22.7B
| $178M | 0.28% |
36,565
-36,370
| -50% | -$1.2M |
|
39
CALL
Shopify
SHOP
$160B
| $168M | 0.27% |
17,700
+3,890
| +28% | +$270K |
|
40
PUT
Costco
COST
$412B
| $165M | 0.26% |
5,438
+2,225
| +69% | +$677K |
|
41
PUT
Walt Disney
DIS
$167B
| $158M | 0.25% |
14,184
-4,727
| -25% | -$522K |
|
|
42
CALL
Costco
COST
$412B
| $157M | 0.25% |
5,190
+2,733
| +111% | +$832K |
|
43
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $150M | 0.24% |
26,407
-6,189
| -19% | -$190K |
|
|
UWC
44
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $147M | 0.24% |
18,279
+3,654
| +25% | +$29.5M |
|
45
PUT
Advanced Micro Devices
AMD
$888B
| $139M | 0.22% |
26,487
+9,009
| +52% | +$478K |
|
|
XYZ
46
PUT
Block Inc
XYZ
$47.8B
| $138M | 0.22% |
13,164
+5,995
| +84% | +$459K |
|
47
PUT
Booking.com
BKNG
$139B
| $137M | 0.22% |
21,475
+5,575
| +35% | +$339K |
|
48
CALL
JPMorgan Chase
JPM
$918B
| $134M | 0.21% |
14,417
+5,662
| +65% | +$537K |
|
49
PUT
Zoom
ZM
$26.3B
| $130M | 0.21% |
5,141
+1,911
| +59% | +$344K |
|
50
CALL
United States Oil Fund
USO
$2.31B
| $128M | 0.2% |
45,654
+42,553
| +1,372% | +$1.16M |
|
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.