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 | |
|---|---|---|---|---|---|---|
6301
Fluence Energy
FLNC
$1.85B
| $89K | ﹤0.01% |
+6,808
| New | +$114K |
|
6302
PUT
ICU Medical
ICUI
$4.21B
| $89K | ﹤0.01% |
400
+300
| +300% | +$67.2K |
|
6303
PUT
Invivyd
IVVD
$158M
| $89K | ﹤0.01% |
19,600
+2,800
| +17% | +$17.1K |
|
6304
Knight Transportation
KNX
$11.3B
| $89K | ﹤0.01% |
+1,766
| New | +$97.3K |
|
6305
CALL
loanDepot
LDI
$532M
| $89K | ﹤0.01% |
21,600
-24,900
| -54% | -$108K |
|
6306
Mercer International
MERC
$42.3M
| $89K | ﹤0.01% |
6,434
+3,838
| +148% | +$49.4K |
|
|
NIU
6307
CALL
Niu Technologies
NIU
$203M
| $89K | ﹤0.01% |
9,300
+5,900
| +174% | +$74.1K |
|
|
SPTN
6308
CALL
DELISTED
SpartanNash
SPTN
| $89K | ﹤0.01% |
2,700
-2,700
| -50% | -$76.3K |
|
|
SY
6309
CALL
So-Young International
SY
$185M
| $89K | ﹤0.01% |
45,000
+7,000
| +18% | +$16.7K |
|
|
TMHC
6310
PUT
DELISTED
Taylor Morrison
TMHC
| $89K | ﹤0.01% |
3,300
-8,100
| -71% | -$246K |
|
|
SCPL
6311
DELISTED
SciPlay Corporation Class A Common Stock
SCPL
| $89K | ﹤0.01% |
6,927
-2,148
| -24% | -$27.1K |
|
|
IDEX
6312
PUT
DELISTED
Ideanomics, Inc. Common Stock
IDEX
| $89K | ﹤0.01% |
637
-648
| -50% | -$82.8K |
|
|
EAR
6313
PUT
DELISTED
Eargo, Inc. Common Stock
EAR
| $89K | ﹤0.01% |
850
+765
| +900% | +$75.6K |
|
|
LOTZ
6314
PUT
DELISTED
CarLotz, Inc. Class A Common Stock
LOTZ
| $89K | ﹤0.01% |
65,500
-34,200
| -34% | -$64.5K |
|
|
RDUS
6315
PUT
DELISTED
Radius Health, Inc.
RDUS
| $89K | ﹤0.01% |
10,100
+9,200
| +1,022% | +$69.8K |
|
6316
PUT
Aqua Metals
AQMS
$8.99M
| $88K | ﹤0.01% |
294
-222
| -43% | -$50.3K |
|
6317
CALL
Flywire
FLYW
$1.98B
| $88K | ﹤0.01% |
+2,900
| New | +$82.6K |
|
6318
CALL
Hippo Holdings
HIPO
$830M
| $88K | ﹤0.01% |
1,776
-8,980
| -83% | -$464K |
|
6319
CALL
International Bancshares
IBOC
$4.76B
| $88K | ﹤0.01% |
2,100
-1,500
| -42% | -$64.4K |
|
6320
CALL
IGC Pharma
IGC
$26M
| $88K | ﹤0.01% |
93,000
-39,000
| -30% | -$37.9K |
|
6321
CALL
Myriad Genetics
MYGN
$270M
| $88K | ﹤0.01% |
3,500
+600
| +21% | +$15.4K |
|
6322
Neurogene
NGNE
$656M
| $88K | ﹤0.01% |
2,365
+2,184
| +1,207% | +$127K |
|
6323
PUT
Orion Energy Systems
OESX
$41M
| $88K | ﹤0.01% |
3,150
+2,540
| +416% | +$81.6K |
|
|
RDUS
6324
CALL
DELISTED
Radius Recycling
RDUS
| $88K | ﹤0.01% |
1,700
-1,100
| -39% | -$49.7K |
|
6325
CALL
Sunstone Hotel Investors
SHO
$2.19B
| $88K | ﹤0.01% |
7,500
+100
| +1% | +$1.14K |
|
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.