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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
NVTA
3476
CALL
DELISTED
Invitae Corporation
NVTA
| $379K | ﹤0.01% |
204,000
-78,600
| -28% | -$192K |
|
3477
CALL
Hycroft Mining Holding Corp
HYMC
$1.81B
| $378K | ﹤0.01% |
71,150
+51,660
| +265% | +$330K |
|
3478
Zymeworks
ZYME
$1.65B
| $378K | ﹤0.01% |
48,192
+13,122
| +37% | +$92.2K |
|
|
NVEI
3479
CALL
DELISTED
Nuvei Corporation Subordinate Voting Shares
NVEI
| $378K | ﹤0.01% |
14,900
+14,600
| +4,867% | +$413K |
|
3480
CALL
Hillman Solutions
HLMN
$1.6B
| $377K | ﹤0.01% |
52,400
-1,900
| -3% | -$14.3K |
|
|
VLRS
3481
Controladora Vuela Compania de Aviacion
VLRS
$905M
| $377K | ﹤0.01% |
45,209
+8,690
| +24% | +$77.1K |
|
|
RAD
3482
PUT
DELISTED
Rite Aid Corporation
RAD
| $377K | ﹤0.01% |
113,100
-11,700
| -9% | -$55.6K |
|
3483
PUT
Black Stone Minerals
BSM
$3.14B
| $376K | ﹤0.01% |
22,300
-89,000
| -80% | -$1.58M |
|
3484
PUT
FTAI Aviation
FTAI
$21.6B
| $376K | ﹤0.01% |
105,700
-48,500
| -31% | -$814K |
|
3485
CALL
BRC Group Holdings
RILY
$266M
| $376K | ﹤0.01% |
11,000
+900
| +9% | +$37.7K |
|
3486
PUT
Hubbell
HUBB
$25.4B
| $375K | ﹤0.01% |
+1,600
| New | +$384K |
|
3487
CALL
Insmed
INSM
$22.6B
| $375K | ﹤0.01% |
18,800
+15,900
| +548% | +$307K |
|
3488
PUT
Ginkgo Bioworks
DNA
$501M
| $374K | ﹤0.01% |
5,540
-9,833
| -64% | -$904K |
|
3489
CALL
Vertex
VERX
$2.14B
| $374K | ﹤0.01% |
+25,800
| New | +$412K |
|
|
VRNT
3490
PUT
DELISTED
Verint Systems
VRNT
| $373K | ﹤0.01% |
10,300
+10,200
| +10,200% | +$368K |
|
3491
PUT
CONMED
CNMD
$1.33B
| $372K | ﹤0.01% |
4,200
+4,000
| +2,000% | +$332K |
|
3492
PUT
Lear
LEA
$7.46B
| $372K | ﹤0.01% |
3,000
+800
| +36% | +$106K |
|
3493
ProPetro Holding
PUMP
$1.3B
| $372K | ﹤0.01% |
35,933
+5,448
| +18% | +$57.4K |
|
|
GOL
3494
CALL
DELISTED
Gol Linhas Aéreas Inteligentes S.A. American Depositary Shares (Each representing Ten Preferred Shares)
GOL
| $372K | ﹤0.01% |
139,700
-148,600
| -52% | -$484K |
|
3495
CALL
Entergy
ETR
$53B
| $371K | ﹤0.01% |
6,600
-3,400
| -34% | -$186K |
|
|
NINE
3496
CALL
DELISTED
Nine Energy Service
NINE
| $371K | ﹤0.01% |
25,600
-44,700
| -64% | -$350K |
|
3497
CALL
Northern Trust
NTRS
$22.2B
| $371K | ﹤0.01% |
4,200
-1,900
| -31% | -$166K |
|
3498
PUT
Revolve Group
RVLV
$1.91B
| $371K | ﹤0.01% |
16,700
-11,800
| -41% | -$283K |
|
|
WIRE
3499
CALL
DELISTED
Encore Wire Corp
WIRE
| $371K | ﹤0.01% |
2,700
-2,700
| -50% | -$374K |
|
|
GDEN
3500
CALL
DELISTED
Golden Entertainment
GDEN
| $370K | ﹤0.01% |
9,900
-900
| -8% | -$37.1K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.