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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
PUT
Walmart Inc
WMT
$878B
| $125M | 0.14% |
2,893,200
+111,900
| +4% | +$4.9M |
|
77
PUT
Walt Disney
DIS
$167B
| $122M | 0.14% |
1,295,600
+211,500
| +20% | +$22.6M |
|
|
XYZ
78
CALL
Block Inc
XYZ
$47.8B
| $122M | 0.14% |
2,220,700
+42,200
| +2% | +$2.99M |
|
|
79
PUT
Berkshire Hathaway Class B
BRK.B
$1.06T
| $122M | 0.14% |
456,200
+39,300
| +9% | +$11.2M |
|
80
CALL
Chevron
CVX
$381B
| $121M | 0.14% |
840,600
-77,600
| -8% | -$11.8M |
|
81
CALL
Proshares UltraShort Technology
REW
$3.27M
| $120M | 0.14% |
380,263
+78,950
| +26% | +$12.1M |
|
82
PUT
Snowflake
SNOW
$94.2B
| $119M | 0.13% |
699,200
+234,600
| +50% | +$38.8M |
|
83
PUT
Boeing
BA
$161B
| $117M | 0.13% |
966,400
-416,200
| -30% | -$63.8M |
|
|
84
CALL
Boeing
BA
$161B
| $117M | 0.13% |
964,000
-302,400
| -24% | -$46.4M |
|
85
CALL
Cisco
CSCO
$442B
| $117M | 0.13% |
2,917,600
+786,600
| +37% | +$34.9M |
|
86
CALL
Goldman Sachs
GS
$320B
| $117M | 0.13% |
398,100
-44,400
| -10% | -$14.4M |
|
87
CALL
Bank of America
BAC
$430B
| $116M | 0.13% |
3,840,900
-516,200
| -12% | -$17.3M |
|
88
PUT
Visa
V
$677B
| $115M | 0.13% |
649,200
+900
| +0.1% | +$183K |
|
89
CALL
Qualcomm
QCOM
$183B
| $115M | 0.13% |
1,015,400
-442,500
| -30% | -$60.8M |
|
90
PUT
Adobe
ADBE
$90.3B
| $115M | 0.13% |
416,400
+154,000
| +59% | +$58.3M |
|
|
91
PUT
Chevron
CVX
$381B
| $114M | 0.13% |
796,800
-189,600
| -19% | -$28.9M |
|
92
CALL
Chipotle Mexican Grill
CMG
$42.7B
| $112M | 0.13% |
3,740,000
-1,930,000
| -34% | -$59.8M |
|
93
CALL
IBM
IBM
$198B
| $112M | 0.13% |
1,089,600
+263,000
| +32% | +$34.5M |
|
|
94
CALL
Vanguard S&P 500 ETF
VOO
$981B
| $111M | 0.13% |
530,000
+75,700
| +17% | +$27.6M |
|
|
95
PUT
Qualcomm
QCOM
$183B
| $111M | 0.13% |
978,900
-257,000
| -21% | -$35.3M |
|
96
CALL
iShares MSCI Australia ETF
EWA
$1.34B
| $110M | 0.12% |
3,801,400
+1,057,900
| +39% | +$23M |
|
97
PUT
GameStop
GME
$9.78B
| $110M | 0.12% |
4,380,400
-1,045,200
| -19% | -$34.1M |
|
98
CALL
Salesforce
CRM
$139B
| $110M | 0.12% |
763,500
-47,900
| -6% | -$8.12M |
|
|
99
CALL
Citigroup
C
$223B
| $110M | 0.12% |
2,633,100
-16,900
| -0.6% | -$835K |
|
100
PUT
AutoZone
AZO
$48.9B
| $108M | 0.12% |
50,500
+37,700
| +295% | +$82.1M |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.