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 | |
|---|---|---|---|---|---|---|
3451
CALL
NBT Bancorp
NBTB
$2.82B
| $508K | ﹤0.01% |
13,400
+13,000
| +3,250% | +$513K |
|
|
ALLK
3452
DELISTED
Allakos
ALLK
| $507K | ﹤0.01% |
82,896
-7,710
| -9% | -$32.3K |
|
|
LPRO
3453
CALL
Open Lending Corp
LPRO
$372M
| $507K | ﹤0.01% |
63,100
+48,500
| +332% | +$490K |
|
3454
CALL
Gibraltar Industries
ROCK
$1.28B
| $507K | ﹤0.01% |
12,400
+11,500
| +1,278% | +$490K |
|
3455
PUT
Viper Energy
VNOM
$8.43B
| $507K | ﹤0.01% |
17,700
+5,100
| +40% | +$149K |
|
3456
PUT
McCormick & Company Non-Voting
MKC
$14B
| $506K | ﹤0.01% |
7,100
-19,200
| -73% | -$1.61M |
|
3457
Editas Medicine
EDIT
$399M
| $505K | ﹤0.01% |
+41,268
| New | +$643K |
|
|
3458
CALL
Viper Energy
VNOM
$8.43B
| $504K | ﹤0.01% |
17,600
-9,400
| -35% | -$274K |
|
3459
CALL
Entergy
ETR
$50.3B
| $503K | ﹤0.01% |
10,000
-55,600
| -85% | -$3.19M |
|
|
MNRL
3460
CALL
DELISTED
Brigham Minerals, Inc. Class A Common Stock
MNRL
| $503K | ﹤0.01% |
20,400
-700
| -3% | -$18.7K |
|
3461
Airbnb
ABNB
$90.8B
| $502K | ﹤0.01% |
4,783
-3,000
| -39% | -$332K |
|
3462
Penumbra
PEN
$12.6B
| $502K | ﹤0.01% |
+2,651
| New | +$425K |
|
3463
Safe Bulkers
SB
$772M
| $502K | ﹤0.01% |
203,561
+85,334
| +72% | +$289K |
|
3464
CALL
BRC Inc
BRCC
$122M
| $501K | ﹤0.01% |
64,900
-90,000
| -58% | -$814K |
|
3465
PUT
Costamare
CMRE
$1.85B
| $501K | ﹤0.01% |
56,000
+25,000
| +81% | +$276K |
|
|
NVNO
3466
CALL
enVVeno Medical
NVNO
$6.94M
| $501K | ﹤0.01% |
2,280
+937
| +70% | +$199K |
|
3467
CALL
Alpha Pro Tech
APT
$49.9M
| $500K | ﹤0.01% |
123,600
+25,500
| +26% | +$111K |
|
3468
CALL
Comtech Telecommunications
CMTL
$49.7M
| $500K | ﹤0.01% |
50,000
-400
| -0.8% | -$4.41K |
|
3469
CALL
IHS Holding
IHS
$2.78B
| $500K | ﹤0.01% |
+89,700
| New | +$687K |
|
3470
KeyCorp
KEY
$23.8B
| $500K | ﹤0.01% |
+31,272
| New | +$560K |
|
|
ARI
3471
PUT
Apollo Commercial Real Estate
ARI
$864M
| $499K | ﹤0.01% |
60,200
-18,500
| -24% | -$212K |
|
3472
CALL
LKQ Corp
LKQ
$6.72B
| $499K | ﹤0.01% |
10,600
-2,700
| -20% | -$141K |
|
3473
BlackBerry
BB
$4.58B
| $498K | ﹤0.01% |
106,133
+1,723
| +2% | +$10.3K |
|
3474
PUT
NNN REIT
NNN
$9.29B
| $498K | ﹤0.01% |
12,500
-5,400
| -30% | -$244K |
|
3475
SM Energy
SM
$7.6B
| $498K | ﹤0.01% |
+13,263
| New | +$522K |
|
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.