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 | |
|---|---|---|---|---|---|---|
|
CIVI
4401
CALL
DELISTED
Civitas Resources
CIVI
| $235K | ﹤0.01% |
4,100
| – | – |
|
4402
CALL
Ondas Inc
ONDS
$4.27B
| $235K | ﹤0.01% |
63,700
+6,000
| +10% | +$28.2K |
|
4403
DarioHealth
DRIO
$70.9M
| $234K | ﹤0.01% |
2,537
+1,147
| +83% | +$123K |
|
4404
CALL
National Healthcare
NHC
$3.53B
| $234K | ﹤0.01% |
3,700
+1,400
| +61% | +$97.3K |
|
|
CTIC
4405
DELISTED
CTI BioPharma Corp. (DE) Common Stock
CTIC
| $234K | ﹤0.01% |
40,371
-55,428
| -58% | -$345K |
|
4406
Consensus Cloud Solutions
CCSI
$670M
| $233K | ﹤0.01% |
4,928
+4,740
| +2,521% | +$244K |
|
4407
Castle Biosciences
CSTL
$855M
| $233K | ﹤0.01% |
8,968
+8,022
| +848% | +$225K |
|
4408
PUT
Quest Diagnostics
DGX
$25.7B
| $233K | ﹤0.01% |
1,900
-47,400
| -96% | -$6.24M |
|
4409
CALL
BBVA Argentina
BBAR
$3.87B
| $232K | ﹤0.01% |
77,100
+6,200
| +9% | +$17.3K |
|
4410
CALL
EnerSys
ENS
$6.78B
| $232K | ﹤0.01% |
4,000
-4,600
| -53% | -$293K |
|
4411
CALL
Kayne Anderson Energy Infrastructure Fund
KYN
$2.47B
| $232K | ﹤0.01% |
28,700
-19,400
| -40% | -$173K |
|
4412
PUT
Envista
NVST
$4.44B
| $232K | ﹤0.01% |
7,100
+6,000
| +545% | +$227K |
|
4413
PUT
Sabra Healthcare REIT
SBRA
$5.34B
| $232K | ﹤0.01% |
17,700
-17,900
| -50% | -$264K |
|
4414
CALL
ACI Worldwide
ACIW
$5.83B
| $231K | ﹤0.01% |
11,100
-76,500
| -87% | -$1.9M |
|
4415
CALL
BioXcel Therapeutics
BTAI
$24.9M
| $231K | ﹤0.01% |
1,225
+656
| +115% | +$152K |
|
4416
PUT
BRC Group Holdings
RILY
$288M
| $231K | ﹤0.01% |
5,200
+2,800
| +117% | +$140K |
|
4417
CALL
Rapid7
RPD
$645M
| $231K | ﹤0.01% |
5,400
+2,200
| +69% | +$136K |
|
4418
CALL
Vir Biotechnology
VIR
$1.46B
| $231K | ﹤0.01% |
12,000
-17,800
| -60% | -$453K |
|
|
SRNE
4419
DELISTED
Sorrento Therapeutics, Inc.
SRNE
| $231K | ﹤0.01% |
147,289
-100,268
| -41% | -$227K |
|
|
CVM.WS
4420
CALL
DELISTED
Cel-Sci Corp Series S
CVM.WS
| $231K | ﹤0.01% |
74,900
+1,600
| +2% | +$4.93K |
|
4421
Equinox Gold
EQX
$7.06B
| $230K | ﹤0.01% |
63,015
-4,018
| -6% | -$15.6K |
|
4422
PUT
Melco Resorts & Entertainment
MLCO
$2.22B
| $230K | ﹤0.01% |
34,700
-15,400
| -31% | -$84.9K |
|
|
OTLY
4423
PUT
Oatly Group
OTLY
$465M
| $230K | ﹤0.01% |
4,390
+1,645
| +60% | +$114K |
|
4424
West Pharmaceutical
WST
$24B
| $230K | ﹤0.01% |
936
-2,314
| -71% | -$705K |
|
4425
CALL
Beam Global
BEEM
$23.3M
| $229K | ﹤0.01% |
18,800
+8,200
| +77% | +$118K |
|
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.