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 | |
|---|---|---|---|---|---|---|
226
PUT
ASML
ASML
$689B
| $54.9M | 0.06% |
132,200
+38,400
| +41% | +$19.2M |
|
227
PUT
Plug Power
PLUG
$3.19B
| $54.7M | 0.06% |
2,601,600
+775,700
| +42% | +$18.5M |
|
228
PUT
American Express
AXP
$236B
| $54.6M | 0.06% |
404,600
-34,000
| -8% | -$5.15M |
|
|
229
CALL
Plug Power
PLUG
$3.19B
| $54.4M | 0.06% |
2,589,400
+1,171,900
| +83% | +$27.9M |
|
230
PUT
JD.com
JD
$40.7B
| $54.3M | 0.06% |
1,080,200
+26,600
| +3% | +$1.58M |
|
231
PUT
Abbott
ABT
$174B
| $54.3M | 0.06% |
561,100
+404,600
| +259% | +$43.1M |
|
|
UWC
232
CALL
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $54.1M | 0.06% |
2,709,700
-1,250,900
| -32% | -$25M |
|
233
PUT
AbbVie
ABBV
$453B
| $54M | 0.06% |
402,300
-146,500
| -27% | -$21M |
|
234
PUT
Chipotle Mexican Grill
CMG
$42.4B
| $53.9M | 0.06% |
1,795,000
-795,000
| -31% | -$24.6M |
|
235
PUT
lululemon athletica
LULU
$12.9B
| $53.8M | 0.06% |
192,500
+51,900
| +37% | +$16.1M |
|
236
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$433M
| $53.7M | 0.06% |
2,081,300
+634,000
| +44% | +$18.4M |
|
237
CALL
ConocoPhillips
COP
$146B
| $53.3M | 0.06% |
521,000
+46,300
| +10% | +$4.62M |
|
238
CALL
Expedia Group
EXPE
$31.7B
| $53.3M | 0.06% |
569,100
-17,100
| -3% | -$1.75M |
|
239
CALL
ServiceNow
NOW
$100B
| $53.2M | 0.06% |
705,000
+85,000
| +14% | +$7.65M |
|
240
PUT
Target
TGT
$62.6B
| $53.2M | 0.06% |
358,800
-156,900
| -30% | -$25.1M |
|
241
CALL
Pinduoduo
PDD
$119B
| $53.2M | 0.06% |
850,000
+213,800
| +34% | +$12.4M |
|
242
PUT
iShares Silver Trust
SLV
$29.1B
| $53M | 0.06% |
3,026,700
+172,200
| +6% | +$3.05M |
|
243
CALL
PepsiCo
PEP
$185B
| $52.8M | 0.06% |
323,700
+12,600
| +4% | +$2.17M |
|
244
PUT
Roku
ROKU
$21.3B
| $52.4M | 0.06% |
928,700
+116,500
| +14% | +$8.87M |
|
245
Tesla
TSLA
$1.42T
| $51.7M | 0.06% |
194,950
+27,670
| +17% | +$7.73M |
|
246
CALL
First Solar
FSLR
$22.4B
| $51.5M | 0.06% |
389,400
+74,800
| +24% | +$8.02M |
|
|
247
PUT
ConocoPhillips
COP
$146B
| $50.6M | 0.06% |
494,500
-188,100
| -28% | -$18.8M |
|
248
PUT
Take-Two Interactive
TTWO
$43.3B
| $50.6M | 0.06% |
463,800
-113,800
| -20% | -$14.1M |
|
249
CALL
Comcast
CMCSA
$85.1B
| $50.4M | 0.06% |
1,717,000
+417,900
| +32% | +$15.6M |
|
|
DOCU
250
PUT
DocuSign
DOCU
$9.25B
| $50.3M | 0.06% |
940,900
+162,300
| +21% | +$10.2M |
|
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.