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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5351
PUT
Cytokinetics
CYTK
$10.9B
| $173K | ﹤0.01% |
4,700
+2,900
| +161% | +$103K |
|
5352
Evolv Technologies
EVLV
$986M
| $173K | ﹤0.01% |
+65,400
| New | +$214K |
|
5353
CALL
1-800-Flowers.com
FLWS
$246M
| $173K | ﹤0.01% |
13,600
+9,500
| +232% | +$163K |
|
5354
CALL
Golar LNG
GLNG
$4.91B
| $173K | ﹤0.01% |
7,000
-5,900
| -46% | -$97.3K |
|
5355
Pearson
PSO
$10.5B
| $173K | ﹤0.01% |
17,379
+11,814
| +212% | +$107K |
|
|
BFX
5356
CALL
DELISTED
BowFlex Inc.
BFX
| $173K | ﹤0.01% |
42,000
+9,700
| +30% | +$48.3K |
|
|
PRVB
5357
DELISTED
Provention Bio, Inc. Common Stock
PRVB
| $173K | ﹤0.01% |
23,737
+12,724
| +116% | +$76.1K |
|
|
SWIR
5358
CALL
DELISTED
Sierra Wireless
SWIR
| $173K | ﹤0.01% |
9,600
+8,700
| +967% | +$145K |
|
|
WBT
5359
PUT
DELISTED
Welbilt, Inc.
WBT
| $173K | ﹤0.01% |
7,300
+3,200
| +78% | +$76K |
|
5360
Alector
ALEC
$180M
| $172K | ﹤0.01% |
12,128
+4,185
| +53% | +$66.2K |
|
5361
CarGurus
CARG
$3.25B
| $172K | ﹤0.01% |
4,053
+2,872
| +243% | +$106K |
|
5362
PUT
Gran Tierra Energy
GTE
$237M
| $172K | ﹤0.01% |
10,970
+10,620
| +3,034% | +$130K |
|
5363
CALL
Oceaneering
OII
$4.74B
| $172K | ﹤0.01% |
11,400
+7,500
| +192% | +$108K |
|
5364
CALL
PMV Pharmaceuticals
PMVP
$60.3M
| $172K | ﹤0.01% |
8,300
+8,200
| +8,200% | +$145K |
|
5365
Vertiv
VRT
$87.6B
| $172K | ﹤0.01% |
+12,348
| New | +$220K |
|
|
RCM
5366
DELISTED
R1 RCM Inc. Common Stock
RCM
| $172K | ﹤0.01% |
6,452
+4,388
| +213% | +$108K |
|
|
DENN
5367
CALL
DELISTED
Denny's
DENN
| $171K | ﹤0.01% |
12,000
-12,500
| -51% | -$190K |
|
5368
PUT
Diamondrock Hospitality Co
DRH
$2.64B
| $171K | ﹤0.01% |
17,000
+12,900
| +315% | +$125K |
|
5369
EverQuote
EVER
$886M
| $171K | ﹤0.01% |
10,592
+4,791
| +83% | +$72.5K |
|
|
GRMN
5370
Garmin
GRMN
$57.4B
| $171K | ﹤0.01% |
+1,447
| New | +$174K |
|
5371
Helmerich & Payne
HP
$3.37B
| $171K | ﹤0.01% |
4,001
-22,798
| -85% | -$786K |
|
5372
IPG Photonics
IPGP
$3.6B
| $171K | ﹤0.01% |
1,565
+1,297
| +484% | +$178K |
|
|
ORIO
5373
CALL
Orion Digital Corp
ORIO
$15.2M
| $171K | ﹤0.01% |
19,700
+10,600
| +116% | +$77.5K |
|
5374
ProShares Ultra Energy
DIG
$81.3M
| $170K | ﹤0.01% |
+4,824
| New | +$140K |
|
|
LITS
5375
CALL
Lite Strategy Inc
LITS
$33.6M
| $170K | ﹤0.01% |
14,155
+4,030
| +40% | +$158K |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.