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 | |
|---|---|---|---|---|---|---|
4326
PUT
Eastern Bankshares
EBC
$5.27B
| $348K | ﹤0.01% |
+16,200
| New | +$345K |
|
4327
CALL
Eton Pharmaceutcials
ETON
$1.32B
| $347K | ﹤0.01% |
79,700
+58,700
| +280% | +$231K |
|
4328
PUT
Papa John's
PZZA
$1.01B
| $347K | ﹤0.01% |
3,300
-11,300
| -77% | -$1.27M |
|
4329
CALL
Metallus
MTUS
$833M
| $347K | ﹤0.01% |
15,900
+9,800
| +161% | +$172K |
|
|
MIMO
4330
CALL
DELISTED
Airspan Networks Holdings Inc
MIMO
| $347K | ﹤0.01% |
119,400
+90,300
| +310% | +$337K |
|
4331
PUT
Atmos Energy
ATO
$29.7B
| $346K | ﹤0.01% |
2,900
-100
| -3% | -$10.9K |
|
4332
GitLab
GTLB
$5.75B
| $346K | ﹤0.01% |
6,355
-8,370
| -57% | -$499K |
|
4333
PUT
Immersion
IMMR
$243M
| $346K | ﹤0.01% |
62,400
+58,900
| +1,683% | +$305K |
|
4334
PUT
NNN REIT
NNN
$9.29B
| $346K | ﹤0.01% |
7,700
-3,100
| -29% | -$136K |
|
4335
ProShares UltraShort Bloomberg Crude Oil
SCO
$654M
| $346K | ﹤0.01% |
2,995
+2,154
| +256% | +$365K |
|
4336
CALL
Dole
DOLE
$1.38B
| $345K | ﹤0.01% |
27,900
+4,300
| +18% | +$59.5K |
|
4337
PUT
MillerKnoll
MLKN
$1.56B
| $345K | ﹤0.01% |
10,000
+1,300
| +15% | +$47.9K |
|
4338
CALL
Everspin Technologies
MRAM
$303M
| $345K | ﹤0.01% |
39,700
+26,100
| +192% | +$250K |
|
|
HT
4339
CALL
DELISTED
Hersha Hospitality Trust Priority Class A Common Shares of Beneficial Interest
HT
| $345K | ﹤0.01% |
38,100
+8,000
| +27% | +$73.8K |
|
|
AGS
4340
DELISTED
PlayAGS
AGS
| $344K | ﹤0.01% |
51,628
+50,956
| +7,583% | +$383K |
|
4341
PUT
Dave Inc
DAVE
$4.82B
| $344K | ﹤0.01% |
+1,506
| New | +$363K |
|
4342
PUT
Spire
SR
$4.79B
| $344K | ﹤0.01% |
4,800
+4,700
| +4,700% | +$312K |
|
|
VSXY
4343
Victoria's Secret
VSXY
$7.09B
| $344K | ﹤0.01% |
6,709
-14,352
| -68% | -$781K |
|
|
MDC
4344
PUT
DELISTED
M.D.C. Holdings, Inc.
MDC
| $344K | ﹤0.01% |
9,100
+4,800
| +112% | +$219K |
|
|
SOLO
4345
CALL
DELISTED
Electrameccanica Vehicles Corp. Ltd.
SOLO
| $344K | ﹤0.01% |
158,700
+88,600
| +126% | +$184K |
|
4346
CALL
Agios Pharmaceuticals
AGIO
$2.08B
| $343K | ﹤0.01% |
11,800
+11,700
| +11,700% | +$357K |
|
4347
CALL
Allegro MicroSystems
ALGM
$7.86B
| $343K | ﹤0.01% |
12,100
-17,300
| -59% | -$494K |
|
4348
CALL
Fortuna Silver Mines
FSM
$2.54B
| $343K | ﹤0.01% |
90,100
-65,000
| -42% | -$246K |
|
4349
CALL
Heron Therapeutics
HRTX
$93.4M
| $343K | ﹤0.01% |
60,000
+53,100
| +770% | +$389K |
|
4350
iShares MSCI China ETF
MCHI
$6.23B
| $343K | ﹤0.01% |
+6,496
| New | +$382K |
|
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.