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 | |
|---|---|---|---|---|---|---|
4651
Equinix
EQIX
$99.4B
| $278K | ﹤0.01% |
+376
| New | +$271K |
|
|
GMS
4652
CALL
DELISTED
GMS Inc
GMS
| $278K | ﹤0.01% |
5,600
+4,500
| +409% | +$237K |
|
4653
Interactive Brokers
IBKR
$38.4B
| $278K | ﹤0.01% |
16,896
+3,696
| +28% | +$63.6K |
|
4654
PUT
Purple Innovation
PRPL
$34.5M
| $278K | ﹤0.01% |
1,904
-380
| -17% | -$74.8K |
|
4655
PUT
Smith & Wesson
SWBI
$649M
| $278K | ﹤0.01% |
18,400
-11,100
| -38% | -$187K |
|
|
GOOD
4656
CALL
Gladstone Commercial Corp
GOOD
$623M
| $277K | ﹤0.01% |
12,600
+6,300
| +100% | +$141K |
|
|
SAND
4657
DELISTED
Sandstorm Gold
SAND
| $277K | ﹤0.01% |
34,349
+9,022
| +36% | +$62.2K |
|
4658
CALL
Vir Biotechnology
VIR
$1.46B
| $277K | ﹤0.01% |
10,800
-30,900
| -74% | -$916K |
|
|
SNP
4659
CALL
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $277K | ﹤0.01% |
5,600
+900
| +19% | +$45K |
|
4660
Eos Energy Enterprises
EOSE
$1.14B
| $276K | ﹤0.01% |
66,084
+65,742
| +19,223% | +$271K |
|
4661
CALL
Mueller Industries
MLI
$14.5B
| $276K | ﹤0.01% |
20,400
-28,000
| -58% | -$396K |
|
4662
Molina Healthcare
MOH
$10.4B
| $276K | ﹤0.01% |
828
-186
| -18% | -$57.3K |
|
4663
The Mosaic Company
MOS
$7.19B
| $276K | ﹤0.01% |
4,163
+1,459
| +54% | +$73K |
|
4664
CALL
Payoneer
PAYO
$2.41B
| $276K | ﹤0.01% |
62,000
-44,700
| -42% | -$226K |
|
4665
CALL
Allot
ALLT
$362M
| $275K | ﹤0.01% |
34,000
+33,900
| +33,900% | +$309K |
|
|
CARM
4666
CALL
DELISTED
Carisma Therapeutics
CARM
| $275K | ﹤0.01% |
22,820
+14,830
| +186% | +$207K |
|
4667
Invitation Homes
INVH
$17.9B
| $275K | ﹤0.01% |
+6,864
| New | +$281K |
|
4668
PUT
Melco Resorts & Entertainment
MLCO
$2.21B
| $275K | ﹤0.01% |
36,000
+5,800
| +19% | +$55.8K |
|
4669
Alkermes
ALKS
$8.11B
| $274K | ﹤0.01% |
+10,449
| New | +$259K |
|
|
DEA
4670
CALL
Easterly Government Properties
DEA
$1.16B
| $274K | ﹤0.01% |
5,200
+3,680
| +242% | +$195K |
|
|
EH
4671
CALL
EHang Holdings
EH
$375M
| $274K | ﹤0.01% |
22,900
+1,000
| +5% | +$14.5K |
|
|
JAMF
4672
CALL
DELISTED
Jamf
JAMF
| $274K | ﹤0.01% |
7,900
-5,800
| -42% | -$197K |
|
4673
PUT
nVent Electric
NVT
$21.6B
| $274K | ﹤0.01% |
7,900
+6,200
| +365% | +$217K |
|
4674
Yum China
YUMC
$15.7B
| $274K | ﹤0.01% |
+6,601
| New | +$311K |
|
4675
CALL
Medifast
MED
$107M
| $273K | ﹤0.01% |
1,600
+1,400
| +700% | +$264K |
|
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.