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 | |
|---|---|---|---|---|---|---|
3526
iShares Core S&P Total US Stock Market ETF
ITOT
$92.3B
| $473K | ﹤0.01% |
5,949
+3,360
| +130% | +$297K |
|
3527
CALL
Kratos Defense & Security Solutions
KTOS
$8.23B
| $472K | ﹤0.01% |
46,500
-8,300
| -15% | -$111K |
|
|
ETRN
3528
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $472K | ﹤0.01% |
63,165
-36,547
| -37% | -$306K |
|
|
AHT
3529
CALL
Ashford Hospitality Trust
AHT
$20.8M
| $471K | ﹤0.01% |
6,930
+3,140
| +83% | +$279K |
|
3530
CALL
Designer Brands
DBI
$315M
| $471K | ﹤0.01% |
30,800
-111,900
| -78% | -$1.75M |
|
3531
PUT
Suburban Propane Partners
SPH
$1.21B
| $471K | ﹤0.01% |
31,300
-25,200
| -45% | -$407K |
|
|
AVEO
3532
CALL
DELISTED
AVEO Pharmaceuticals, Inc.
AVEO
| $471K | ﹤0.01% |
57,300
+16,100
| +39% | +$124K |
|
3533
Galicia Financial Group
GGAL
$7.89B
| $470K | ﹤0.01% |
+63,135
| New | +$492K |
|
3534
PUT
Hartford Financial Services
HIG
$39.9B
| $470K | ﹤0.01% |
7,600
+2,700
| +55% | +$176K |
|
3535
Owens Corning
OC
$11B
| $470K | ﹤0.01% |
+5,989
| New | +$503K |
|
3536
PUT
Ubiquiti
UI
$31.6B
| $469K | ﹤0.01% |
1,600
-4,500
| -74% | -$1.33M |
|
|
MAXR
3537
CALL
DELISTED
Maxar Technologies Inc. Common Stock
MAXR
| $469K | ﹤0.01% |
25,100
-29,500
| -54% | -$724K |
|
3538
Direxion Daily Financial Bull 3x ETF
FAS
$2.4B
| $467K | ﹤0.01% |
+8,619
| New | +$619K |
|
3539
Brighthouse Financial
BHF
$3.61B
| $466K | ﹤0.01% |
10,747
+2,829
| +36% | +$129K |
|
3540
Krispy Kreme
DNUT
$562M
| $466K | ﹤0.01% |
40,431
+28,201
| +231% | +$371K |
|
3541
Five Below
FIVE
$11.6B
| $466K | ﹤0.01% |
3,386
+2,797
| +475% | +$367K |
|
3542
CALL
Jackson Financial
JXN
$8.4B
| $466K | ﹤0.01% |
16,800
-95,400
| -85% | -$2.82M |
|
3543
Bloom Energy
BE
$46.6B
| $465K | ﹤0.01% |
23,292
-33,600
| -59% | -$757K |
|
3544
iShares MSCI Spain ETF
EWP
$2.04B
| $465K | ﹤0.01% |
+23,504
| New | +$523K |
|
3545
CALL
RLX Technology
RLX
$2.37B
| $465K | ﹤0.01% |
443,200
+180,300
| +69% | +$276K |
|
3546
CALL
Abercrombie & Fitch
ANF
$4.55B
| $464K | ﹤0.01% |
29,900
-4,900
| -14% | -$84.6K |
|
|
CGC
3547
Canopy Growth
CGC
$376M
| $464K | ﹤0.01% |
+17,025
| New | +$525K |
|
3548
Bausch + Lomb
BLCO
$5.78B
| $463K | ﹤0.01% |
30,224
+15,816
| +110% | +$251K |
|
3549
PUT
MarketWise
MKTW
$54.6M
| $463K | ﹤0.01% |
10,165
+9,610
| +1,732% | +$567K |
|
3550
Shift4
FOUR
$4.45B
| $462K | ﹤0.01% |
10,371
-12,999
| -56% | -$546K |
|
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.