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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
26
PUT
Advanced Micro Devices
AMD
$897B
| $506M | 0.46% |
4,630,400
+214,100
| +5% | +$25.6M |
|
27
CALL
Alibaba
BABA
$279B
| $439M | 0.4% |
4,031,800
-184,600
| -4% | -$21.3M |
|
28
PUT
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46.1B
| $412M | 0.38% |
1,188,100
+335,200
| +39% | +$116M |
|
29
PUT
Netflix
NFLX
$293B
| $397M | 0.36% |
10,599,000
+1,549,000
| +17% | +$64.5M |
|
30
PUT
GameStop
GME
$9.67B
| $348M | 0.32% |
8,360,800
+467,200
| +6% | +$13.8M |
|
|
31
CALL
Netflix
NFLX
$293B
| $328M | 0.3% |
8,769,000
+3,844,000
| +78% | +$160M |
|
32
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.15B
| $321M | 0.29% |
4,317,000
+1,096,900
| +34% | +$156M |
|
33
PUT
iShares Morningstar Value ETF
ILCV
$1.31B
| $306M | 0.28% |
3,805,000
+475,600
| +14% | +$32.2M |
|
34
PUT
VanEck Gold Miners ETF
GDX
$23.6B
| $301M | 0.28% |
4,946,500
+1,161,300
| +31% | +$39.5M |
|
35
PUT
Shopify
SHOP
$156B
| $298M | 0.27% |
4,414,000
+2,803,000
| +174% | +$230M |
|
36
CALL
Boeing
BA
$163B
| $296M | 0.27% |
1,545,500
-314,800
| -17% | -$63.2M |
|
|
37
CALL
VanEck Gold Miners ETF
GDX
$23.6B
| $294M | 0.27% |
5,995,200
-320,500
| -5% | -$10.9M |
|
38
PUT
Walt Disney
DIS
$168B
| $293M | 0.27% |
2,136,700
+497,700
| +30% | +$72M |
|
|
39
CALL
Shopify
SHOP
$156B
| $291M | 0.27% |
4,311,000
+3,571,000
| +483% | +$293M |
|
|
XYZ
40
PUT
Block Inc
XYZ
$46.5B
| $286M | 0.26% |
2,109,300
+393,300
| +23% | +$47.6M |
|
41
PUT
Vanguard S&P 500 ETF
VOO
$980B
| $284M | 0.26% |
919,800
+24,400
| +3% | +$9.99M |
|
|
42
CALL
State Street SPDR NYSE Technology ETF
XNTK
$2.15B
| $283M | 0.26% |
3,548,600
+1,154,700
| +48% | +$165M |
|
43
CALL
PayPal
PYPL
$49B
| $278M | 0.25% |
2,401,800
+238,600
| +11% | +$31.8M |
|
44
PUT
Costco
COST
$411B
| $278M | 0.25% |
481,900
+198,600
| +70% | +$104M |
|
|
45
PUT
Alibaba
BABA
$279B
| $277M | 0.25% |
2,544,700
-434,900
| -15% | -$50.1M |
|
46
PUT
ARK Space & Defense Innovation ETF
ARKX
$827M
| $260M | 0.24% |
4,253,600
+2,461,000
| +137% | +$41.9M |
|
|
47
PUT
Boeing
BA
$163B
| $255M | 0.23% |
1,331,400
-74,400
| -5% | -$14.9M |
|
|
48
CALL
Walt Disney
DIS
$168B
| $249M | 0.23% |
1,816,300
+67,200
| +4% | +$9.71M |
|
49
CALL
JPMorgan Chase
JPM
$919B
| $246M | 0.23% |
1,874,800
+382,200
| +26% | +$56.4M |
|
|
50
PUT
PayPal
PYPL
$49B
| $240M | 0.22% |
2,076,700
+605,900
| +41% | +$80.6M |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.