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 | |
|---|---|---|---|---|---|---|
5626
PUT
SPX Corp
SPXC
$10.8B
| $93K | ﹤0.01% |
1,700
+1,200
| +240% | +$68.7K |
|
|
CBD
5627
CALL
DELISTED
Companhia Brasileira de Distribuicao
CBD
| $93K | ﹤0.01% |
26,500
-2,400
| -8% | -$8.51K |
|
|
EIGR
5628
DELISTED
Eiger BioPharmaceuticals, Inc.
EIGR
| $93K | ﹤0.01% |
415
+297
| +252% | +$73K |
|
|
CVT
5629
PUT
DELISTED
Cvent Holding Corp. Common Stock
CVT
| $93K | ﹤0.01% |
17,900
-4,600
| -20% | -$26.1K |
|
5630
Arvinas
ARVN
$542M
| $92K | ﹤0.01% |
+2,071
| New | +$101K |
|
5631
PUT
Pathward Financial
CASH
$1.89B
| $92K | ﹤0.01% |
2,800
+2,600
| +1,300% | +$93.4K |
|
5632
CALL
Churchill Downs
CHDN
$6.02B
| $92K | ﹤0.01% |
1,000
-2,400
| -71% | -$245K |
|
5633
PUT
CleanSpark
CLSK
$3.46B
| $92K | ﹤0.01% |
29,100
+5,500
| +23% | +$23.8K |
|
5634
CEL-SCI Corp
CVM
$26.6M
| $92K | ﹤0.01% |
1,003
+466
| +87% | +$56.1K |
|
5635
CALL
Expensify
EXFY
$195M
| $92K | ﹤0.01% |
6,200
+3,900
| +170% | +$72.8K |
|
5636
Inseego
INSG
$121M
| $92K | ﹤0.01% |
4,481
+2,174
| +94% | +$52.5K |
|
5637
CALL
KRONOS Worldwide
KRO
$714M
| $92K | ﹤0.01% |
9,900
+2,700
| +38% | +$39.6K |
|
5638
CALL
Novanta
NOVT
$5.45B
| $92K | ﹤0.01% |
+800
| New | +$109K |
|
5639
CALL
Pulse Biosciences
PLSE
$2.62B
| $92K | ﹤0.01% |
40,200
+38,200
| +1,910% | +$62K |
|
|
CHUY
5640
PUT
DELISTED
Chuy's Holdings, Inc. Common Stock
CHUY
| $92K | ﹤0.01% |
4,000
+3,900
| +3,900% | +$87.1K |
|
|
ECOM
5641
PUT
DELISTED
CHANNELADVISOR CORPORATION
ECOM
| $92K | ﹤0.01% |
+4,100
| New | +$71K |
|
5642
ARK Innovation ETF
ARKK
$6.05B
| $91K | ﹤0.01% |
2,412
-60,882
| -96% | -$2.71M |
|
|
CVAC
5643
PUT
DELISTED
CureVac
CVAC
| $91K | ﹤0.01% |
11,600
-13,800
| -54% | -$161K |
|
5644
ProShares UltraShort Energy
DUG
$22.2M
| $91K | ﹤0.01% |
1,198
-501
| -29% | -$38K |
|
|
PPLI
5645
People Inc
PPLI
$3.28B
| $91K | ﹤0.01% |
2,022
-1,461
| -42% | -$82.2K |
|
5646
Energy Vault
NRGV
$546M
| $91K | ﹤0.01% |
+17,424
| New | +$94.7K |
|
|
PDS
5647
CALL
Precision Drilling
PDS
$963M
| $91K | ﹤0.01% |
1,800
+1,400
| +350% | +$84.7K |
|
5648
CALL
Insulet
PODD
$9.23B
| $91K | ﹤0.01% |
400
-12,000
| -97% | -$3.01M |
|
|
RDNW
5649
CALL
RideNow Group
RDNW
$259M
| $91K | ﹤0.01% |
5,400
+2,800
| +108% | +$56.5K |
|
|
TBI
5650
PUT
Trueblue
TBI
$301M
| $91K | ﹤0.01% |
+4,800
| New | +$97.1K |
|
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.