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 | |
|---|---|---|---|---|---|---|
5526
CALL
PJT Partners
PJT
$4.43B
| $100K | ﹤0.01% |
1,500
+100
| +7% | +$7.01K |
|
5527
CALL
FreightCar America
RAIL
$258M
| $100K | ﹤0.01% |
27,000
+7,800
| +41% | +$32.6K |
|
5528
PUT
Red Violet
RDVT
$971M
| $100K | ﹤0.01% |
5,800
+5,700
| +5,700% | +$114K |
|
5529
PUT
RLJ Lodging Trust
RLJ
$1.88B
| $100K | ﹤0.01% |
9,900
+4,800
| +94% | +$57.6K |
|
5530
CALL
Riskified
RSKD
$702M
| $100K | ﹤0.01% |
25,500
+12,700
| +99% | +$59.5K |
|
5531
PUT
Vanguard Total International Stock ETF
VXUS
$159B
| $100K | ﹤0.01% |
2,200
-5,300
| -71% | -$271K |
|
5532
Direxion Daily Consumer Discretionary Bull 3X ETF
WANT
$19.4M
| $100K | ﹤0.01% |
4,268
-4,025
| -49% | -$132K |
|
5533
CALL
Walker & Dunlop
WD
$1.77B
| $100K | ﹤0.01% |
1,200
+100
| +9% | +$10.2K |
|
|
IRD
5534
CALL
Opus Genetics
IRD
$306M
| $100K | ﹤0.01% |
50,200
+5,800
| +13% | +$12.5K |
|
5535
PUT
ADC Therapeutics
ADCT
$139M
| $99K | ﹤0.01% |
+20,600
| New | +$149K |
|
5536
PUT
BlackSky Technology
BKSY
$1.02B
| $99K | ﹤0.01% |
8,300
-4,525
| -35% | -$78.2K |
|
5537
Evolv Technologies
EVLV
$1.07B
| $99K | ﹤0.01% |
46,757
-23,253
| -33% | -$60.7K |
|
|
HUYA
5538
Huya Inc
HUYA
$561M
| $99K | ﹤0.01% |
44,913
-11,988
| -21% | -$38.7K |
|
5539
CALL
Imperial Oil
IMO
$60.6B
| $99K | ﹤0.01% |
2,300
-4,800
| -68% | -$219K |
|
5540
CALL
Kopin
KOPN
$741M
| $99K | ﹤0.01% |
94,300
+16,200
| +21% | +$22.6K |
|
5541
PUT
Lifetime Brands
LCUT
$194M
| $99K | ﹤0.01% |
14,700
| – | – |
|
5542
CALL
Patria Investments
PAX
$1.83B
| $99K | ﹤0.01% |
7,600
+900
| +13% | +$12.6K |
|
5543
PolyPid
PYPD
$88.4M
| $99K | ﹤0.01% |
2,831
+1,826
| +182% | +$226K |
|
5544
ProShares Short Real Estate
REK
$11.8M
| $99K | ﹤0.01% |
4,657
+2,152
| +86% | +$40.3K |
|
5545
CALL
ThredUp
TDUP
$807M
| $99K | ﹤0.01% |
53,900
-39,000
| -42% | -$97.8K |
|
5546
PUT
TriplePoint Venture Growth BDC
TPVG
$189M
| $99K | ﹤0.01% |
9,200
-3,400
| -27% | -$44.3K |
|
5547
Vanguard Morningstar Mid-Cap ETF
VO
$109B
| $99K | ﹤0.01% |
2,116
-928
| -30% | -$48.5K |
|
5548
WD-40
WDFC
$3.17B
| $99K | ﹤0.01% |
+566
| New | +$106K |
|
|
AFIB
5549
DELISTED
Acutus Medical Inc
AFIB
| $99K | ﹤0.01% |
112,977
+8,980
| +9% | +$10.9K |
|
|
APEN
5550
CALL
DELISTED
Apollo Endosurgery, Inc.
APEN
| $99K | ﹤0.01% |
18,000
-4,100
| -19% | -$22.7K |
|
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.