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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
CALL
Intuit
INTU
$77.8B
| $83.2M | 0.09% |
213,700
+67,900
| +47% | +$26.9M |
|
177
CALL
Proshares UltraShort Technology
REW
$3.28M
| $82.4M | 0.09% |
362,788
-17,475
| -5% | -$3.01M |
|
178
PUT
Bristol-Myers Squibb
BMY
$124B
| $82.3M | 0.09% |
1,143,700
-179,900
| -14% | -$13.6M |
|
179
CALL
BP
BP
$112B
| $81.6M | 0.09% |
2,335,100
-856,900
| -27% | -$28.5M |
|
180
PUT
Deere & Co
DE
$164B
| $81.2M | 0.09% |
189,400
-100,100
| -35% | -$40.7M |
|
181
CALL
McDonald's
MCD
$187B
| $80.9M | 0.09% |
307,100
-63,900
| -17% | -$16.9M |
|
182
PUT
Texas Instruments
TXN
$268B
| $80.3M | 0.09% |
486,000
-354,800
| -42% | -$59.2M |
|
183
PUT
T-Mobile US
TMUS
$206B
| $80.1M | 0.09% |
572,400
+234,700
| +69% | +$33.7M |
|
184
PUT
PepsiCo
PEP
$185B
| $80M | 0.09% |
443,100
+64,000
| +17% | +$11.4M |
|
185
PUT
Union Pacific
UNP
$173B
| $79.9M | 0.09% |
386,000
-34,800
| -8% | -$7.14M |
|
186
PUT
Etsy
ETSY
$7.63B
| $79.7M | 0.09% |
665,700
+212,300
| +47% | +$24.3M |
|
|
187
CALL
Bristol-Myers Squibb
BMY
$124B
| $78.9M | 0.09% |
1,097,200
+220,400
| +25% | +$16.6M |
|
188
CALL
Palo Alto Networks
PANW
$272B
| $78.3M | 0.09% |
1,122,000
+96,800
| +9% | +$7.77M |
|
189
PUT
GameStop
GME
$9.69B
| $78.1M | 0.08% |
4,229,400
-151,000
| -3% | -$3.7M |
|
190
PUT
Blackstone
BX
$150B
| $77.9M | 0.08% |
1,050,600
+346,300
| +49% | +$29.9M |
|
191
NVIDIA
NVDA
$5.15T
| $77.7M | 0.08% |
5,316,140
-1,455,530
| -21% | -$21.3M |
|
192
PUT
Ulta Beauty
ULTA
$20.7B
| $77.6M | 0.08% |
165,500
+24,900
| +18% | +$10.7M |
|
|
193
PUT
AT&T
T
$159B
| $77.5M | 0.08% |
4,845,700
+1,403,500
| +41% | +$25.1M |
|
194
PUT
Dollar Tree
DLTR
$23.5B
| $77.1M | 0.08% |
544,800
+395,200
| +264% | +$58.8M |
|
|
195
PUT
Proshares UltraShort Technology
REW
$3.28M
| $76.1M | 0.08% |
317,988
-33,087
| -9% | -$5.69M |
|
196
PUT
NextEra Energy
NEE
$187B
| $76M | 0.08% |
909,600
+133,700
| +17% | +$10.8M |
|
197
PUT
FedEx
FDX
$76.8B
| $74.9M | 0.08% |
432,400
+22,000
| +5% | +$3.66M |
|
198
PUT
Linde
LIN
$235B
| $74.8M | 0.08% |
229,200
-51,700
| -18% | -$16.2M |
|
199
CALL
Lam Research
LRCX
$399B
| $74.7M | 0.08% |
1,778,000
+1,264,000
| +246% | +$52.9M |
|
200
CALL
Chipotle Mexican Grill
CMG
$41.3B
| $74.6M | 0.08% |
2,690,000
-1,050,000
| -28% | -$31.4M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.