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 | |
|---|---|---|---|---|---|---|
8276
America Movil
AMX
$74.6B
| $19K | ﹤0.01% |
+912
| New | +$17.6K |
|
8277
PUT
Aquestive Therapeutics
AQST
$452M
| $19K | ﹤0.01% |
7,300
-10,000
| -58% | -$29.2K |
|
8278
PUT
Archrock
AROC
$6.16B
| $19K | ﹤0.01% |
2,100
-25,400
| -92% | -$217K |
|
8279
AeroVironment
AVAV
$7.19B
| $19K | ﹤0.01% |
+202
| New | +$14K |
|
8280
AXIS Capital
AXS
$7.73B
| $19K | ﹤0.01% |
+323
| New | +$18K |
|
8281
CALL
Badger Meter
BMI
$3.87B
| $19K | ﹤0.01% |
200
-200
| -50% | -$19.6K |
|
8282
Santander
BSBR
$38.2B
| $19K | ﹤0.01% |
2,507
-2,967
| -54% | -$18.5K |
|
|
STEX
8283
Streamex Corp
STEX
$71.8M
| $19K | ﹤0.01% |
1,734
+519
| +43% | +$8.29K |
|
8284
PUT
Casey's General Stores
CASY
$32.1B
| $19K | ﹤0.01% |
100
-7,600
| -99% | -$1.43M |
|
8285
CALL
Columbia Banking Systems
COLB
$8.71B
| $19K | ﹤0.01% |
600
| – | – |
|
|
EMX
8286
PUT
DELISTED
EMX Royalty
EMX
| $19K | ﹤0.01% |
9,000
+6,100
| +210% | +$13.5K |
|
8287
CALL
Enerpac Tool Group
EPAC
$1.86B
| $19K | ﹤0.01% |
900
-100
| -10% | -$1.89K |
|
|
FARM
8288
CALL
DELISTED
Farmer Brothers
FARM
| $19K | ﹤0.01% |
2,800
-11,900
| -81% | -$77.3K |
|
8289
PUT
Halozyme
HALO
$9.88B
| $19K | ﹤0.01% |
500
-8,000
| -94% | -$285K |
|
8290
Vanguard S&P Mid-Cap 400 Growth ETF
IVOG
$1.6B
| $19K | ﹤0.01% |
+200
| New | +$19.1K |
|
|
KALV
8291
CALL
DELISTED
KalVista Pharmaceuticals
KALV
| $19K | ﹤0.01% |
+1,300
| New | +$18.7K |
|
8292
LiqTech
LIQT
$20.5M
| $19K | ﹤0.01% |
979
+36
| +4% | +$1.56K |
|
8293
Lyell Immunopharma
LYEL
$318M
| $19K | ﹤0.01% |
196
+114
| +139% | +$13.8K |
|
8294
PUT
Murphy USA
MUSA
$11.4B
| $19K | ﹤0.01% |
100
-1,500
| -94% | -$282K |
|
8295
PUT
New Mountain Finance
NMFC
$654M
| $19K | ﹤0.01% |
1,400
+800
| +133% | +$10.8K |
|
8296
CALL
Enpro
NPO
$6.26B
| $19K | ﹤0.01% |
200
+100
| +100% | +$10.6K |
|
8297
Plains GP Holdings
PAGP
$5.28B
| $19K | ﹤0.01% |
1,697
-6,612
| -80% | -$76K |
|
|
PDM
8298
Piedmont Realty Trust
PDM
$1.24B
| $19K | ﹤0.01% |
+1,138
| New | +$20K |
|
8299
CALL
RBC Bearings
RBC
$17.4B
| $19K | ﹤0.01% |
100
| – | – |
|
8300
CALL
Red Cat Holdings
RCAT
$1.03B
| $19K | ﹤0.01% |
9,700
-26,500
| -73% | -$51K |
|
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.