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 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3276
Direxion Daily TSLA Bull 2X ETF
TSLL
$2.42B
| $494K | ﹤0.01% |
38,694
+30,834
| +392% | +$316K |
|
3277
AngloGold Ashanti
AU
$40.7B
| $493K | ﹤0.01% |
20,409
+2,948
| +17% | +$59.7K |
|
3278
CALL
Twist Bioscience
TWST
$5.39B
| $493K | ﹤0.01% |
32,700
+22,100
| +208% | +$488K |
|
3279
PUT
Century Aluminum
CENX
$4.44B
| $492K | ﹤0.01% |
49,200
+35,900
| +270% | +$372K |
|
3280
Academy Sports + Outdoors
ASO
$3.09B
| $491K | ﹤0.01% |
+7,531
| New | +$444K |
|
3281
CALL
CVR Energy
CVI
$3.43B
| $491K | ﹤0.01% |
15,000
+4,000
| +36% | +$128K |
|
|
DRRX
3282
DELISTED
DURECT Corp
DRRX
| $491K | ﹤0.01% |
+108,527
| New | +$589K |
|
3283
Fiverr
FVRR
$398M
| $491K | ﹤0.01% |
14,067
+9,013
| +178% | +$329K |
|
|
DCH
3284
CALL
Dauch Corp
DCH
$1.32B
| $490K | ﹤0.01% |
62,800
+40,000
| +175% | +$343K |
|
3285
CALL
Genmab
GMAB
$17.7B
| $490K | ﹤0.01% |
+13,000
| New | +$500K |
|
3286
Mondelez International
MDLZ
$77.9B
| $489K | ﹤0.01% |
7,018
-110,575
| -94% | -$7.32M |
|
|
RVNC
3287
PUT
DELISTED
Revance Therapeutics, Inc.
RVNC
| $489K | ﹤0.01% |
15,200
-30,400
| -67% | -$948K |
|
|
AVTA
3288
CALL
DELISTED
Avantax, Inc. Common Stock
AVTA
| $489K | ﹤0.01% |
18,600
-62,200
| -77% | -$1.69M |
|
3289
Hershey
HSY
$36.6B
| $488K | ﹤0.01% |
+1,919
| New | +$451K |
|
3290
PagSeguro Digital
PAGS
$2.62B
| $488K | ﹤0.01% |
57,022
+13,249
| +30% | +$118K |
|
3291
KraneShares Global Carbon Strategy ETF
KRBN
$140M
| $487K | ﹤0.01% |
+12,299
| New | +$474K |
|
3292
CALL
Medifast
MED
$110M
| $487K | ﹤0.01% |
4,700
+2,400
| +104% | +$266K |
|
3293
CALL
Wendy's
WEN
$1.39B
| $487K | ﹤0.01% |
22,400
-38,900
| -63% | -$854K |
|
|
SYRS
3294
CALL
DELISTED
Syros Pharmaceuticals, Inc. Common Stock
SYRS
| $486K | ﹤0.01% |
182,200
-14,900
| -8% | -$57.8K |
|
|
LICY
3295
CALL
DELISTED
Li-Cycle Holdings Corp.
LICY
| $486K | ﹤0.01% |
10,800
+1,662
| +18% | +$73.3K |
|
|
CTLP
3296
DELISTED
Cantaloupe
CTLP
| $485K | ﹤0.01% |
85,245
+68,530
| +410% | +$365K |
|
|
VISN
3297
Vistance Networks Inc
VISN
$2.67B
| $483K | ﹤0.01% |
+75,891
| New | +$575K |
|
3298
CALL
iBio
IBIO
$72M
| $483K | ﹤0.01% |
11,615
+3,475
| +43% | +$89.4K |
|
3299
CALL
ITT
ITT
$17.7B
| $483K | ﹤0.01% |
5,600
+3,800
| +211% | +$334K |
|
3300
CALL
Valley National Bancorp
VLY
$7.94B
| $483K | ﹤0.01% |
52,300
+8,400
| +19% | +$92.9K |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.