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 | Miscellaneous | 97.72% |
| 2 | Technology | 0.67% |
| 3 | Consumer Discretionary | 0.38% |
| 4 | Industrials | 0.24% |
| 5 | Healthcare | 0.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
|
1
PUT
State Street SPDR S&P 500 ETF Trust
SPY
$815B
| $8.56B | 7.83% |
18,961,300
+4,512,100
| +31% | +$2.01B |
2015 Q1
28 quarters
|
|
|
2
CALL
State Street SPDR S&P 500 ETF Trust
SPY
$815B
| $5.22B | 4.77% |
11,557,000
+3,530,000
| +44% | +$1.57B |
2015 Q1
28 quarters
|
|
3
PUT
Invesco QQQ Trust
QQQ
$475B
| $4.74B | 4.33% |
13,074,000
+6,000,100
| +85% | +$2.13B |
2021 Q2
3 quarters
|
|
4
CALL
Tesla
TSLA
$1.48T
| $4.39B | 4.02% |
12,232,500
+24,000
| +0.2% | +$7.48M |
2021 Q2
3 quarters
|
|
|
5
PUT
Tesla
TSLA
$1.48T
| $4.19B | 3.83% |
11,663,400
+916,200
| +9% | +$285M |
2021 Q2
3 quarters
|
|
6
PUT
iShares S&P 100 ETF
OEF
$20.3B
| $3.46B | 3.17% |
24,784,500
+4,808,000
| +24% | +$988M |
2014 Q4
29 quarters
|
|
7
PUT
Amazon
AMZN
$2.7T
| $2.9B | 2.66% |
17,820,000
+4,544,000
| +34% | +$702M |
2015 Q1
28 quarters
|
|
|
8
CALL
Invesco QQQ Trust
QQQ
$475B
| $2.67B | 2.44% |
7,371,800
+2,054,700
| +39% | +$730M |
2021 Q2
3 quarters
|
|
|
9
PUT
Apple
AAPL
$5.08T
| $2.31B | 2.12% |
13,256,700
+2,292,900
| +21% | +$386M |
2015 Q1
28 quarters
|
|
|
10
CALL
Amazon
AMZN
$2.7T
| $2.16B | 1.98% |
13,260,000
+2,490,000
| +23% | +$385M |
2015 Q1
28 quarters
|
|
|
11
CALL
Apple
AAPL
$5.08T
| $1.97B | 1.8% |
11,261,100
+40,800
| +0.4% | +$6.86M |
2015 Q1
28 quarters
|
|
|
12
CALL
iShares S&P 100 ETF
OEF
$20.3B
| $1.68B | 1.53% |
15,370,200
+396,300
| +3% | +$81.4M |
2014 Q4
29 quarters
|
|
13
PUT
State Street Materials Select Sector SPDR ETF
XLB
$8.18B
| $1.43B | 1.31% |
39,246,400
-1,143,600
| -3% | -$48.8M |
2015 Q1
28 quarters
|
|
14
CALL
Alphabet (Google) Class A
GOOGL
$3.97T
| $1.4B | 1.28% |
10,082,000
+5,302,000
| +111% | +$720M |
2015 Q4
25 quarters
|
|
|
15
PUT
Alphabet (Google) Class A
GOOGL
$3.97T
| $1.17B | 1.07% |
8,358,000
+3,038,000
| +57% | +$413M |
2015 Q4
25 quarters
|
|
16
CALL
SPDR Gold Trust
GLD
$136B
| $1.05B | 0.96% |
5,801,700
+3,522,400
| +155% | +$618M |
2015 Q1
28 quarters
|
|
17
CALL
NVIDIA
NVDA
$5.12T
| $1B | 0.92% |
37,708,000
+9,897,000
| +36% | +$248M |
2021 Q2
3 quarters
|
|
|
18
PUT
NVIDIA
NVDA
$5.12T
| $991M | 0.91% |
36,303,000
+779,000
| +2% | +$19.5M |
2021 Q2
3 quarters
|
|
19
PUT
Microsoft
MSFT
$3.87T
| $904M | 0.83% |
2,931,000
+657,000
| +29% | +$198M |
2014 Q4
29 quarters
|
|
20
CALL
Meta Platforms (Facebook)
META
$1.65T
| $865M | 0.79% |
3,892,200
+1,095,100
| +39% | +$274M |
2014 Q4
29 quarters
|
|
|
21
CALL
Microsoft
MSFT
$3.87T
| $810M | 0.74% |
2,626,500
+697,700
| +36% | +$210M |
2014 Q4
29 quarters
|
|
|
22
CALL
State Street Materials Select Sector SPDR ETF
XLB
$8.18B
| $769M | 0.7% |
20,304,000
+265,600
| +1% | +$11.3M |
2015 Q1
28 quarters
|
|
|
23
PUT
Meta Platforms (Facebook)
META
$1.65T
| $626M | 0.57% |
2,813,500
+169,900
| +6% | +$42.5M |
2014 Q4
29 quarters
|
|
|
24
CALL
Advanced Micro Devices
AMD
$829B
| $598M | 0.55% |
5,473,500
+2,078,300
| +61% | +$248M |
2015 Q3
26 quarters
|
|
|
25
PUT
SPDR Gold Trust
GLD
$136B
| $581M | 0.53% |
3,217,000
+603,200
| +23% | +$106M |
2015 Q1
28 quarters
|
|
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's Q1 2022 filing shows 1,600 new, 4,439 increased, 4,086 reduced and 1,638 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M. The largest sale was State Street Financial Select Sector SPDR ETF, an estimated $42.8M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 97% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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 1,600 new positions and closed 1,638 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.