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 | |
|---|---|---|---|---|---|---|
176
CALL
Baidu
BIDU
$36.8B
| $69.5M | 0.08% |
591,400
+231,900
| +65% | +$31.7M |
|
177
PUT
Proshares UltraShort Technology
REW
$3.27M
| $69.4M | 0.08% |
351,075
-39,150
| -10% | -$6.01M |
|
178
PUT
IBM
IBM
$198B
| $69.3M | 0.08% |
637,300
-56,700
| -8% | -$7.44M |
|
179
CALL
JD.com
JD
$41.1B
| $69.1M | 0.08% |
1,372,900
+454,900
| +50% | +$26.9M |
|
180
CALL
Coinbase
COIN
$46.3B
| $69M | 0.08% |
1,070,700
+214,600
| +25% | +$15M |
|
181
PUT
Procter & Gamble
PG
$345B
| $69M | 0.08% |
546,900
+30,200
| +6% | +$4.29M |
|
182
CALL
Home Depot
HD
$331B
| $68.6M | 0.08% |
258,200
-145,100
| -36% | -$42.8M |
|
183
Alphabet (Google) Class A
GOOGL
$4.24T
| $68.6M | 0.08% |
717,124
-42,856
| -6% | -$4.75M |
|
184
PUT
ServiceNow
NOW
$105B
| $67.7M | 0.08% |
896,000
-83,000
| -8% | -$7.47M |
|
185
PUT
Eli Lilly
LLY
$1.05T
| $67.5M | 0.08% |
208,700
+53,500
| +34% | +$17M |
|
186
PUT
Uber
UBER
$146B
| $67M | 0.08% |
2,526,700
-460,900
| -15% | -$12.7M |
|
187
CALL
Shopify
SHOP
$160B
| $65.2M | 0.07% |
2,421,800
-3,294,000
| -58% | -$112M |
|
188
CALL
Thermo Fisher Scientific
TMO
$195B
| $65.2M | 0.07% |
128,500
+69,900
| +119% | +$39.1M |
|
|
189
CALL
Berkshire Hathaway Class B
BRK.B
$1.06T
| $64.4M | 0.07% |
241,100
-212,700
| -47% | -$60.5M |
|
190
PUT
Trade Desk
TTD
$8.58B
| $64.2M | 0.07% |
1,074,700
+403,700
| +60% | +$23M |
|
191
CALL
Marathon Petroleum
MPC
$93.3B
| $64.1M | 0.07% |
645,600
+146,000
| +29% | +$13.7M |
|
192
PUT
Palo Alto Networks
PANW
$279B
| $63.4M | 0.07% |
774,000
+22,200
| +3% | +$1.92M |
|
193
CALL
FedEx
FDX
$75.2B
| $63M | 0.07% |
424,500
+49,300
| +13% | +$10.4M |
|
194
PUT
Merck
MRK
$312B
| $62.5M | 0.07% |
873,900
-296,400
| -25% | -$26.5M |
|
195
CALL
Bristol-Myers Squibb
BMY
$124B
| $62.3M | 0.07% |
876,800
+155,100
| +21% | +$11.3M |
|
196
CALL
ProShares UltraShort Health Care
RXD
$3.35M
| $62.2M | 0.07% |
1,147,000
+251,350
| +28% | +$6.78M |
|
197
PUT
PepsiCo
PEP
$184B
| $61.9M | 0.07% |
379,100
+80,900
| +27% | +$13.9M |
|
198
CALL
Accenture
ACN
$86.2B
| $61.9M | 0.07% |
240,500
+96,200
| +67% | +$27.8M |
|
199
PUT
Roblox
RBLX
$37.6B
| $61.9M | 0.07% |
1,726,100
+442,700
| +34% | +$18.3M |
|
200
CALL
Union Pacific
UNP
$176B
| $61.1M | 0.07% |
313,600
+84,100
| +37% | +$18.6M |
|
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.