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 | |
|---|---|---|---|---|---|---|
2576
CALL
Louisiana-Pacific
LPX
$5.19B
| $1.06M | ﹤0.01% |
20,700
| – | – |
|
2577
CALL
Voyager Therapeutics
VYGR
$187M
| $1.06M | ﹤0.01% |
178,900
+12,700
| +8% | +$81.3K |
|
2578
PUT
Calumet Specialty Products
CLMT
$3.6B
| $1.06M | ﹤0.01% |
82,600
+47,200
| +133% | +$677K |
|
2579
CALL
Intrepid Potash
IPI
$461M
| $1.06M | ﹤0.01% |
26,700
+13,700
| +105% | +$594K |
|
2580
PUT
Kanzhun
BZ
$7.03B
| $1.05M | ﹤0.01% |
62,400
-13,800
| -18% | -$311K |
|
|
ALTR
2581
CALL
DELISTED
Altair Engineering Inc
ALTR
| $1.05M | ﹤0.01% |
23,800
-2,800
| -11% | -$147K |
|
2582
CALL
Goosehead Insurance
GSHD
$1.47B
| $1.05M | ﹤0.01% |
+29,500
| New | +$1.53M |
|
2583
PUT
ZTO Express
ZTO
$18.1B
| $1.05M | ﹤0.01% |
43,700
+14,700
| +51% | +$383K |
|
2584
CALL
AutoNation
AN
$7.1B
| $1.05M | ﹤0.01% |
10,300
+2,300
| +29% | +$270K |
|
|
WEBR
2585
DELISTED
Weber Inc.
WEBR
| $1.05M | ﹤0.01% |
159,666
+135,425
| +559% | +$988K |
|
2586
Amplify Energy
AMPY
$155M
| $1.05M | ﹤0.01% |
159,451
+40,583
| +34% | +$276K |
|
|
SPR
2587
DELISTED
Spirit AeroSystems
SPR
| $1.05M | ﹤0.01% |
+47,784
| New | +$1.45M |
|
2588
PUT
Huazhu Hotels Group
HTHT
$12.9B
| $1.05M | ﹤0.01% |
31,200
-500
| -2% | -$18.9K |
|
2589
CALL
Calix
CALX
$2.32B
| $1.04M | ﹤0.01% |
17,100
+10,900
| +176% | +$583K |
|
2590
CALL
Bentley Systems
BSY
$10.2B
| $1.04M | ﹤0.01% |
34,100
+33,200
| +3,689% | +$1.21M |
|
2591
PUT
Alamos Gold
AGI
$12.5B
| $1.04M | ﹤0.01% |
140,400
+13,700
| +11% | +$101K |
|
|
NVRO
2592
PUT
DELISTED
NEVRO CORP.
NVRO
| $1.04M | ﹤0.01% |
22,300
+17,100
| +329% | +$794K |
|
2593
CALL
Madison Square Garden
MSGS
$9.57B
| $1.04M | ﹤0.01% |
7,600
+5,400
| +245% | +$838K |
|
|
SGEN
2594
DELISTED
Seagen Inc. Common Stock
SGEN
| $1.04M | ﹤0.01% |
7,593
-16,213
| -68% | -$2.64M |
|
2595
United States Brent Oil Fund
BNO
$755M
| $1.04M | ﹤0.01% |
37,934
-20,283
| -35% | -$610K |
|
|
IRBT
2596
CALL
DELISTED
iRobot
IRBT
| $1.04M | ﹤0.01% |
18,400
-21,100
| -53% | -$1.11M |
|
2597
PUT
Smith & Nephew
SNN
$13.1B
| $1.03M | ﹤0.01% |
44,600
+44,200
| +11,050% | +$1.13M |
|
2598
PUT
CNX Resources
CNX
$4.77B
| $1.03M | ﹤0.01% |
66,600
+53,400
| +405% | +$905K |
|
2599
iShares Core S&P Mid-Cap ETF
IJH
$123B
| $1.03M | ﹤0.01% |
23,600
+13,750
| +140% | +$665K |
|
2600
Waters Corp
WAT
$36.4B
| $1.03M | ﹤0.01% |
+3,837
| New | +$1.22M |
|
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.