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 | |
|---|---|---|---|---|---|---|
|
AIXC
8876
AIxCrypto Holdings Inc
AIXC
$16.3M
| $10K | ﹤0.01% |
33
-25
| -43% | -$9.76K |
|
8877
CALL
Quantum Corp
QMCO
$447M
| $10K | ﹤0.01% |
235
-60
| -20% | -$4.4K |
|
8878
CALL
RAVE Restaurant Group
RAVE
$43.5M
| $10K | ﹤0.01% |
9,700
-31,000
| -76% | -$32.2K |
|
|
REVG
8879
DELISTED
REV Group
REVG
| $10K | ﹤0.01% |
+768
| New | +$10.5K |
|
8880
iShares Residential and Multisector Real Estate ETF
REZ
$912M
| $10K | ﹤0.01% |
110
+62
| +129% | +$5.75K |
|
8881
Regenxbio
RGNX
$603M
| $10K | ﹤0.01% |
323
+292
| +942% | +$8.11K |
|
8882
CALL
Resources Connection
RGP
$134M
| $10K | ﹤0.01% |
+600
| New | +$10.3K |
|
8883
PUT
Raymond James Financial
RJF
$33.8B
| $10K | ﹤0.01% |
100
-300
| -75% | -$31.8K |
|
8884
Scholastic
SCHL
$771M
| $10K | ﹤0.01% |
256
+92
| +56% | +$3.81K |
|
8885
CALL
Simmons First National
SFNC
$3.38B
| $10K | ﹤0.01% |
400
-100
| -20% | -$2.89K |
|
8886
PUT
SK Telecom
SKM
$11.8B
| $10K | ﹤0.01% |
+400
| New | +$10.4K |
|
8887
CALL
Syndax Pharmaceuticals
SNDX
$1.75B
| $10K | ﹤0.01% |
600
+500
| +500% | +$8.42K |
|
8888
PUT
TD Synnex
SNX
$19.6B
| $10K | ﹤0.01% |
100
| – | – |
|
|
SUPV
8889
PUT
Grupo Supervielle
SUPV
$833M
| $10K | ﹤0.01% |
5,000
-16,100
| -76% | -$30.7K |
|
|
SVM
8890
Silvercorp Metals
SVM
$2.08B
| $10K | ﹤0.01% |
2,851
-14,379
| -83% | -$52.5K |
|
8891
TIM SA
TIMB
$9.43B
| $10K | ﹤0.01% |
+696
| New | +$8.79K |
|
8892
PUT
Thomson Reuters
TRI
$45.3B
| $10K | ﹤0.01% |
95
-1,518
| -94% | -$169K |
|
|
UBX
8893
PUT
DELISTED
Unity Biotechnology
UBX
| $10K | ﹤0.01% |
920
-960
| -51% | -$10.8K |
|
8894
UFP Industries
UFPI
$5.14B
| $10K | ﹤0.01% |
131
-2,160
| -94% | -$180K |
|
8895
Usio Inc
USIO
$53.5M
| $10K | ﹤0.01% |
+2,837
| New | +$9.88K |
|
8896
Universal Technical Institute
UTI
$2.13B
| $10K | ﹤0.01% |
1,215
-13,000
| -91% | -$107K |
|
8897
PUT
Visteon
VC
$2.86B
| $10K | ﹤0.01% |
100
-200
| -67% | -$21.8K |
|
8898
Vericel Corp
VCEL
$2.38B
| $10K | ﹤0.01% |
285
-4,630
| -94% | -$167K |
|
|
VRE
8899
PUT
DELISTED
Veris Residential
VRE
| $10K | ﹤0.01% |
600
-51,300
| -99% | -$890K |
|
8900
CALL
Washington Trust Bancorp
WASH
$752M
| $10K | ﹤0.01% |
200
-500
| -71% | -$27.9K |
|
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.