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 | |
|---|---|---|---|---|---|---|
3326
PUT
Zimmer Biomet
ZBH
$18.7B
| $566K | ﹤0.01% |
6,100
+4,300
| +239% | +$472K |
|
3327
PUT
Carrier Global
CARR
$50.4B
| $565K | ﹤0.01% |
15,900
+2,900
| +22% | +$114K |
|
3328
CALL
Jack Henry & Associates
JKHY
$11.5B
| $565K | ﹤0.01% |
3,100
+400
| +15% | +$78.5K |
|
3329
Eli Lilly
LLY
$1.09T
| $565K | ﹤0.01% |
+1,748
| New | +$554K |
|
3330
PUT
Target Hospitality
TH
$1.44B
| $565K | ﹤0.01% |
44,800
+32,700
| +270% | +$409K |
|
|
PRTY
3331
CALL
DELISTED
Party City Holdco Inc.
PRTY
| $565K | ﹤0.01% |
358,000
+240,100
| +204% | +$403K |
|
3332
CALL
Simpson Manufacturing
SSD
$7.86B
| $564K | ﹤0.01% |
7,200
+6,100
| +555% | +$590K |
|
3333
Huntsman Corp
HUN
$2.02B
| $563K | ﹤0.01% |
+22,953
| New | +$645K |
|
3334
CALL
LiveWire
LVWR
$450M
| $563K | ﹤0.01% |
+78,500
| New | +$586K |
|
|
MAXN
3335
PUT
DELISTED
Maxeon Solar Technologies
MAXN
| $563K | ﹤0.01% |
237
-116
| -33% | -$214K |
|
3336
CALL
NETGEAR
NTGR
$625M
| $563K | ﹤0.01% |
28,100
+24,600
| +703% | +$553K |
|
|
CIM
3337
CALL
Chimera Investment
CIM
$1.06B
| $561K | ﹤0.01% |
35,833
+24,200
| +208% | +$630K |
|
3338
CALL
Infosys
INFY
$50.6B
| $561K | ﹤0.01% |
33,100
-43,100
| -57% | -$805K |
|
3339
CALL
MKS Inc
MKSI
$18B
| $561K | ﹤0.01% |
6,800
+900
| +15% | +$92.7K |
|
|
DQ
3340
Daqo New Energy
DQ
$819M
| $560K | ﹤0.01% |
+10,562
| New | +$674K |
|
3341
PUT
U-Haul Holding Co
UHAL
$14.2B
| $560K | ﹤0.01% |
11,000
+7,000
| +175% | +$367K |
|
3342
CALL
WisdomTree US Total Dividend Fund
DTD
$1.65B
| $559K | ﹤0.01% |
16,200
-14,200
| -47% | -$846K |
|
3343
CALL
Terex
TEX
$7.41B
| $559K | ﹤0.01% |
18,800
+8,000
| +74% | +$262K |
|
3344
CALL
Mid-America Apartment Communities
MAA
$16B
| $558K | ﹤0.01% |
3,600
+1,100
| +44% | +$189K |
|
|
TEAD
3345
PUT
Teads Holding Co
TEAD
$77.8M
| $558K | ﹤0.01% |
152,900
-60,300
| -28% | -$293K |
|
3346
PUT
Beam Therapeutics
BEAM
$2.65B
| $557K | ﹤0.01% |
11,700
-6,000
| -34% | -$342K |
|
3347
PUT
Fastenal
FAST
$54.6B
| $557K | ﹤0.01% |
24,200
+8,600
| +55% | +$217K |
|
3348
CALL
TherapeuticsMD
TXMD
$23.6M
| $557K | ﹤0.01% |
84,000
-14,100
| -14% | -$114K |
|
3349
Boyd Gaming
BYD
$6.71B
| $556K | ﹤0.01% |
11,669
-19,514
| -63% | -$1.05M |
|
|
VERV
3350
CALL
DELISTED
Verve Therapeutics
VERV
| $556K | ﹤0.01% |
16,200
+12,000
| +286% | +$383K |
|
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.