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 | |
|---|---|---|---|---|---|---|
3501
CALL
Invesco CurrencyShares Australian Dollar Trust
FXA
$96.4M
| $487K | ﹤0.01% |
7,700
+7,000
| +1,000% | +$473K |
|
3502
Theravance Biopharma
TBPH
$873M
| $487K | ﹤0.01% |
48,092
+44,677
| +1,308% | +$419K |
|
3503
CALL
Travere Therapeutics
TVTX
$5.17B
| $487K | ﹤0.01% |
19,800
-11,300
| -36% | -$292K |
|
3504
PUT
United Parks & Resorts
PRKS
$2.19B
| $486K | ﹤0.01% |
10,700
-72,100
| -87% | -$3.59M |
|
3505
PUT
Newell Brands
NWL
$2.21B
| $483K | ﹤0.01% |
34,800
-6,600
| -16% | -$123K |
|
3506
JFrog
FROG
$8.88B
| $482K | ﹤0.01% |
21,809
-7,087
| -25% | -$158K |
|
3507
PUT
Gaming and Leisure Properties
GLPI
$13B
| $482K | ﹤0.01% |
10,900
+4,900
| +82% | +$242K |
|
3508
Oxford Industries
OXM
$581M
| $482K | ﹤0.01% |
+5,378
| New | +$520K |
|
3509
PUT
Photronics
PLAB
$1.65B
| $482K | ﹤0.01% |
33,000
+20,800
| +170% | +$409K |
|
3510
ProShares UltraPro Short Russell2000
SRTY
$82.1M
| $482K | ﹤0.01% |
1,698
-775
| -31% | -$176K |
|
3511
PUT
Ternium
TX
$9.43B
| $482K | ﹤0.01% |
17,600
+1,100
| +7% | +$35.4K |
|
3512
CALL
Harmony Gold Mining
HMY
$9.7B
| $481K | ﹤0.01% |
198,300
+53,400
| +37% | +$155K |
|
3513
PUT
Lightwave Logic
LWLG
$823M
| $481K | ﹤0.01% |
65,600
-36,300
| -36% | -$340K |
|
3514
10x Genomics
TXG
$5.88B
| $481K | ﹤0.01% |
16,905
+12,702
| +302% | +$484K |
|
|
CMRC
3515
PUT
Commerce.com Inc Series 1
CMRC
$272M
| $479K | ﹤0.01% |
32,400
+19,600
| +153% | +$336K |
|
|
TSE
3516
CALL
DELISTED
Trinseo
TSE
| $479K | ﹤0.01% |
26,200
+21,900
| +509% | +$685K |
|
3517
PUT
Carter's
CRI
$1.43B
| $478K | ﹤0.01% |
7,300
+1,000
| +16% | +$76.6K |
|
3518
Matsons
MATX
$6.11B
| $478K | ﹤0.01% |
+7,784
| New | +$598K |
|
3519
CALL
Patterson-UTI
PTEN
$3.54B
| $478K | ﹤0.01% |
41,000
+27,900
| +213% | +$399K |
|
|
ACRE
3520
CALL
Ares Commercial Real Estate
ACRE
$247M
| $476K | ﹤0.01% |
45,600
-5,800
| -11% | -$75.1K |
|
|
TIGR
3521
PUT
UP Fintech Holding
TIGR
$856M
| $476K | ﹤0.01% |
144,700
-37,300
| -20% | -$142K |
|
|
ADN
3522
CALL
DELISTED
Advent Technologies
ADN
| $475K | ﹤0.01% |
5,177
-956
| -16% | -$85.2K |
|
3523
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
$348M
| $475K | ﹤0.01% |
+18,001
| New | +$551K |
|
3524
CALL
Marriott Vacations Worldwide
VAC
$3.53B
| $475K | ﹤0.01% |
3,900
-20,600
| -84% | -$2.8M |
|
3525
PUT
Allegiant Air
ALGT
$2.57B
| $474K | ﹤0.01% |
6,500
+6,300
| +3,150% | +$651K |
|
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.