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 | |
|---|---|---|---|---|---|---|
551
CALL
Veeva Systems
VEEV
$30B
| $20.4M | 0.02% |
126,300
+50,600
| +67% | +$8.65M |
|
552
CALL
KLA
KLAC
$280B
| $20.2M | 0.02% |
537,000
+11,000
| +2% | +$383K |
|
|
CTRA
553
CALL
DELISTED
Coterra Energy
CTRA
| $20.2M | 0.02% |
821,800
+669,000
| +438% | +$18.5M |
|
554
CALL
Edwards Lifesciences
EW
$48.6B
| $20.2M | 0.02% |
270,600
+210,200
| +348% | +$16.2M |
|
555
PUT
Hilton Worldwide
HLT
$73.8B
| $20M | 0.02% |
157,900
-65,900
| -29% | -$8.68M |
|
556
PUT
Unity
U
$12.8B
| $19.9M | 0.02% |
696,800
-322,800
| -32% | -$10.1M |
|
557
CALL
Nucor
NUE
$53.7B
| $19.9M | 0.02% |
150,800
-51,200
| -25% | -$6.96M |
|
558
PUT
Align Technology
ALGN
$12.4B
| $19.8M | 0.02% |
93,700
+16,100
| +21% | +$3.22M |
|
559
PUT
Arista Networks
ANET
$220B
| $19.7M | 0.02% |
650,800
-372,400
| -36% | -$11.5M |
|
560
CALL
Ambarella
AMBA
$3.03B
| $19.7M | 0.02% |
239,900
+178,300
| +289% | +$11.9M |
|
561
PUT
Progressive
PGR
$119B
| $19.7M | 0.02% |
152,000
+69,800
| +85% | +$8.84M |
|
562
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.56B
| $19.7M | 0.02% |
1,383,400
+173,300
| +14% | +$4.28M |
|
563
CALL
Skyworks Solutions
SWKS
$9.5B
| $19.7M | 0.02% |
215,900
+26,100
| +14% | +$2.34M |
|
564
CALL
Western Digital
WDC
$192B
| $19.6M | 0.02% |
823,435
+251,105
| +44% | +$6.62M |
|
565
CALL
Royal Gold
RGLD
$17.1B
| $19.6M | 0.02% |
174,200
+33,200
| +24% | +$3.42M |
|
566
CALL
Fidelity National Information Services
FIS
$21B
| $19.6M | 0.02% |
289,200
+215,000
| +290% | +$15.3M |
|
567
CALL
Chewy
CHWY
$8.81B
| $19.6M | 0.02% |
527,900
-123,100
| -19% | -$4.79M |
|
568
CALL
Nutrien
NTR
$32.9B
| $19.5M | 0.02% |
266,500
+96,700
| +57% | +$7.64M |
|
|
IPFF
569
PUT
DELISTED
iShares International Preferred Stock ETF
IPFF
| $19.4M | 0.02% |
452,200
+263,000
| +139% | +$11.3M |
|
|
NVO
570
CALL
Novo Nordisk
NVO
$213B
| $19.3M | 0.02% |
285,200
+101,200
| +55% | +$5.93M |
|
571
Alphabet (Google) Class C
GOOG
$4.17T
| $19.3M | 0.02% |
217,128
-33,847
| -13% | -$3.23M |
|
572
CALL
Marriott International
MAR
$97.5B
| $19.2M | 0.02% |
129,000
-63,800
| -33% | -$9.82M |
|
573
PUT
Palantir
PLTR
$299B
| $19.1M | 0.02% |
2,982,900
+188,400
| +7% | +$1.43M |
|
574
PayPal
PYPL
$49B
| $19.1M | 0.02% |
268,568
+125,770
| +88% | +$10.1M |
|
575
CALL
Franco-Nevada
FNV
$41.3B
| $19.1M | 0.02% |
139,600
+41,800
| +43% | +$5.52M |
|
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.