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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5376
CALL
Revolution Medicines
RVMD
$39.9B
| $122K | ﹤0.01% |
3,800
-3,400
| -47% | -$101K |
|
5377
Sunoco
SUN
$14.4B
| $122K | ﹤0.01% |
+2,025
| New | +$122K |
|
|
TEF
5378
DELISTED
Telefonica
TEF
| $122K | ﹤0.01% |
27,758
+25,343
| +1,049% | +$104K |
|
|
VERV
5379
CALL
DELISTED
Verve Therapeutics
VERV
| $122K | ﹤0.01% |
9,200
+2,500
| +37% | +$33.2K |
|
|
VERV
5380
DELISTED
Verve Therapeutics
VERV
| $122K | ﹤0.01% |
+9,215
| New | +$122K |
|
|
SMC
5381
Summit Midstream
SMC
$426M
| $122K | ﹤0.01% |
4,372
+3,645
| +501% | +$68.1K |
|
5382
Agree Realty
ADC
$9.34B
| $121K | ﹤0.01% |
+2,124
| New | +$124K |
|
5383
CALL
Atomera
ATOM
$200M
| $121K | ﹤0.01% |
19,800
+8,400
| +74% | +$57.6K |
|
5384
AtriCure
ATRC
$1.92B
| $121K | ﹤0.01% |
+3,991
| New | +$134K |
|
5385
Codexis
CDXS
$151M
| $121K | ﹤0.01% |
34,950
-5,164
| -13% | -$16.3K |
|
5386
CALL
Cardiff Oncology
CRDF
$66.5M
| $121K | ﹤0.01% |
22,800
+21,500
| +1,654% | +$57.1K |
|
5387
iShares MSCI Australia ETF
EWA
$1.39B
| $121K | ﹤0.01% |
+4,924
| New | +$117K |
|
5388
PUT
Franklin Covey
FC
$242M
| $121K | ﹤0.01% |
+3,100
| New | +$124K |
|
5389
PUT
Globant
GLOB
$1.58B
| $121K | ﹤0.01% |
600
-17,400
| -97% | -$3.91M |
|
|
MAG
5390
PUT
DELISTED
MAG Silver
MAG
| $121K | ﹤0.01% |
11,500
-5,400
| -32% | -$49.5K |
|
5391
PUT
MBIA
MBI
$261M
| $121K | ﹤0.01% |
18,000
-70,900
| -80% | -$449K |
|
5392
CALL
Roundhill Ball Metaverse ETF
METV
$209M
| $121K | ﹤0.01% |
9,300
-1,500
| -14% | -$17.9K |
|
5393
PUT
Vir Biotechnology
VIR
$1.46B
| $121K | ﹤0.01% |
12,000
+1,300
| +12% | +$13.2K |
|
5394
CALL
Wrap Technologies
WRAP
$103M
| $121K | ﹤0.01% |
53,600
+47,200
| +738% | +$159K |
|
5395
PUT
AdaptHealth
AHCO
$1.47B
| $120K | ﹤0.01% |
10,500
+3,100
| +42% | +$26.3K |
|
|
BDN
5396
PUT
Brandywine Realty Trust
BDN
$524M
| $120K | ﹤0.01% |
25,100
+9,800
| +64% | +$45.4K |
|
5397
CALL
Coherus Oncology
CHRS
$217M
| $120K | ﹤0.01% |
50,300
-25,500
| -34% | -$62.8K |
|
5398
Huron Consulting
HURN
$2.41B
| $120K | ﹤0.01% |
+1,247
| New | +$126K |
|
5399
Kamada
KMDA
$412M
| $120K | ﹤0.01% |
21,568
+14,563
| +208% | +$86.2K |
|
5400
Liberty Latin America Class C
LILAK
$1.63B
| $120K | ﹤0.01% |
+18,997
| New | +$117K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.