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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
TGR
1401
CALL
DELISTED
ISHARES TARGET DATE RETIREMENT INCOME ETF
TGR
| $1.71M | ﹤0.01% |
1,367
+1,310
| +2,298% | +$1.64M |
|
1402
CALL
Fortinet
FTNT
$111B
| $1.71M | ﹤0.01% |
845
-215
| -20% | -$4.61K |
|
1403
VanEck Semiconductor ETF
SMH
$69.8B
| $1.71M | ﹤0.01% |
29,172
-123,770
| -81% | -$8.34M |
|
1404
PUT
Editas Medicine
EDIT
$419M
| $1.71M | ﹤0.01% |
861
-403
| -32% | -$10.2K |
|
1405
CALL
StoneCo
STNE
$2.67B
| $1.7M | ﹤0.01% |
783
-9
| -1% | -$343 |
|
1406
CALL
Martin Marietta Materials
MLM
$32.8B
| $1.7M | ﹤0.01% |
90
+6
| +7% | +$1.44K |
|
1407
CALL
Repligen
RGEN
$7.76B
| $1.7M | ﹤0.01% |
176
-86
| -33% | -$8.3K |
|
|
NVTA
1408
CALL
DELISTED
Invitae Corporation
NVTA
| $1.7M | ﹤0.01% |
1,243
+457
| +58% | +$8.35K |
|
1409
CALL
Albemarle
ALB
$13.8B
| $1.7M | ﹤0.01% |
301
-136
| -31% | -$10.4K |
|
1410
Hilton Worldwide
HLT
$72.9B
| $1.7M | ﹤0.01% |
24,862
-41,102
| -62% | -$4M |
|
1411
CALL
nVent Electric
NVT
$25.7B
| $1.69M | ﹤0.01% |
1,003
+893
| +812% | +$20.8K |
|
1412
CrowdStrike
CRWD
$187B
| $1.69M | ﹤0.01% |
121,324
-75,360
| -38% | -$1.06M |
|
1413
Madrigal Pharmaceuticals
MDGL
$12.5B
| $1.69M | ﹤0.01% |
25,299
+17,158
| +211% | +$1.43M |
|
1414
CALL
Sunrun
RUN
$2.48B
| $1.69M | ﹤0.01% |
1,672
+1,009
| +152% | +$16.6K |
|
1415
PUT
Radware
RDWR
$1.22B
| $1.69M | ﹤0.01% |
800
+315
| +65% | +$7.41K |
|
1416
CALL
Exelixis
EXEL
$14B
| $1.68M | ﹤0.01% |
978
+232
| +31% | +$4.24K |
|
|
HES
1417
DELISTED
Hess
HES
| $1.68M | ﹤0.01% |
50,570
+49,362
| +4,086% | +$2.67M |
|
1418
PUT
Post Holdings
POST
$4.09B
| $1.68M | ﹤0.01% |
309
-253
| -45% | -$16.4K |
|
1419
PUT
Hasbro
HAS
$12.4B
| $1.67M | ﹤0.01% |
234
-76
| -25% | -$6.58K |
|
1420
PUT
Sempra
SRE
$61.1B
| $1.67M | ﹤0.01% |
296
+156
| +111% | +$11.1K |
|
1421
CALL
BlackBerry
BB
$5.06B
| $1.67M | ﹤0.01% |
4,048
+1,301
| +47% | +$7.07K |
|
1422
PUT
Realty Income
O
$60.4B
| $1.67M | ﹤0.01% |
346
-370
| -52% | -$25.8K |
|
1423
ProShares UltraPro S&P 500
UPRO
$5.09B
| $1.67M | ﹤0.01% |
120,852
+11,608
| +11% | +$346K |
|
1424
CALL
Ollie's Bargain Outlet
OLLI
$3.94B
| $1.67M | ﹤0.01% |
360
+9
| +3% | +$462 |
|
1425
Fidelity National Information Services
FIS
$20.7B
| $1.67M | ﹤0.01% |
13,709
-56,169
| -80% | -$7.8M |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.