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 | |
|---|---|---|---|---|---|---|
|
GRFS
3576
PUT
Grifois
GRFS
$5.27B
| $203K | ﹤0.01% |
101
+1
| +1% | +$22 |
|
3577
Hyatt Hotels
H
$18B
| $203K | ﹤0.01% |
+4,247
| New | +$321K |
|
3578
Innoviva
INVA
$1.57B
| $203K | ﹤0.01% |
17,313
-60,010
| -78% | -$794K |
|
3579
CALL
Ingersoll Rand
IR
$33.1B
| $203K | ﹤0.01% |
82
-22
| -21% | -$699 |
|
3580
Pilgrim's Pride
PPC
$6.94B
| $203K | ﹤0.01% |
+11,239
| New | +$274K |
|
|
WMGI
3581
PUT
DELISTED
Wright Medical Group Inc
WMGI
| $203K | ﹤0.01% |
71
-24
| -25% | -$712 |
|
3582
CALL
Polaris
PII
$4.25B
| $202K | ﹤0.01% |
42
-294
| -88% | -$24.1K |
|
|
3583
PUT
Polaris
PII
$4.25B
| $202K | ﹤0.01% |
42
-29
| -41% | -$2.38K |
|
3584
CALL
Banco Santander
SAN
$200B
| $202K | ﹤0.01% |
899
+435
| +94% | +$1.49K |
|
|
ATCO
3585
CALL
DELISTED
Atlas Corp.
ATCO
| $202K | ﹤0.01% |
263
+149
| +131% | +$1.64K |
|
|
ACC
3586
CALL
DELISTED
American Campus Communities, Inc.
ACC
| $202K | ﹤0.01% |
73
+62
| +564% | +$2.59K |
|
|
ACC
3587
PUT
DELISTED
American Campus Communities, Inc.
ACC
| $202K | ﹤0.01% |
73
+56
| +329% | +$2.34K |
|
3588
CALL
PetMed Express
PETS
$42.1M
| $201K | ﹤0.01% |
70
-247
| -78% | -$6.47K |
|
|
RST
3589
DELISTED
ROSETTA STONE INC
RST
| $201K | ﹤0.01% |
14,346
-1,776
| -11% | -$29.8K |
|
3590
Energy Recovery
ERII
$439M
| $200K | ﹤0.01% |
+26,984
| New | +$256K |
|
3591
CALL
HUB Group
HUBG
$2.93B
| $200K | ﹤0.01% |
88
+80
| +1,000% | +$2.01K |
|
3592
PUT
MidCap Financial Investment
MFIC
$790M
| $200K | ﹤0.01% |
297
+51
| +21% | +$760 |
|
3593
PUT
YPF
YPF
$20B
| $200K | ﹤0.01% |
480
-1,529
| -76% | -$12.4K |
|
|
TNAV
3594
CALL
DELISTED
Telenav Inc.
TNAV
| $200K | ﹤0.01% |
463
+443
| +2,215% | +$2.28K |
|
|
TLRD
3595
PUT
DELISTED
Tailored Brands, Inc.
TLRD
| $200K | ﹤0.01% |
1,151
-487
| -30% | -$1.64K |
|
3596
CALL
Kennametal
KMT
$2.69B
| $199K | ﹤0.01% |
107
+34
| +47% | +$969 |
|
|
DCP
3597
CALL
DELISTED
DCP Midstream, LP
DCP
| $199K | ﹤0.01% |
490
-28
| -5% | -$466 |
|
3598
CALL
Atmos Energy
ATO
$29.7B
| $198K | ﹤0.01% |
20
-93
| -82% | -$10.2K |
|
3599
PUT
Armstrong World Industries
AWI
$7.05B
| $198K | ﹤0.01% |
25
+4
| +19% | +$386 |
|
3600
CALL
Harmony Gold Mining
HMY
$9.92B
| $198K | ﹤0.01% |
910
-23
| -2% | -$76 |
|
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.