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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
351
PUT
WisdomTree US Total Dividend Fund
DTD
$1.65B
| $634K | 0.05% |
6,492
+4,536
| +232% | +$158K |
|
352
PUT
Viatris
VTRS
$19.8B
| $633K | 0.05% |
1,878
+92
| +5% | +$4.44K |
|
|
ESRX
353
PUT
DELISTED
Express Scripts Holding Company
ESRX
| $631K | 0.05% |
1,180
+850
| +258% | +$61.1K |
|
354
CALL
Dollar General
DG
$26.5B
| $630K | 0.05% |
805
+582
| +261% | +$44.1K |
|
355
PUT
BP
BP
$112B
| $628K | 0.05% |
3,173
+2,283
| +257% | +$57.6K |
|
356
CALL
Yum! Brands
YUM
$40.7B
| $628K | 0.05% |
1,377
-868
| -39% | -$45.5K |
|
|
GWPH
357
CALL
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $625K | 0.05% |
574
+437
| +319% | +$24K |
|
358
PUT
SLB Ltd
SLB
$71.3B
| $623K | 0.05% |
1,545
-42
| -3% | -$2.95K |
|
359
ATI
ATI
$26.7B
| $620K | 0.05% |
38,097
+13,853
| +57% | +$169K |
|
|
MRO
360
PUT
DELISTED
Marathon Oil Corporation
MRO
| $620K | 0.05% |
2,701
+1,966
| +267% | +$18.4K |
|
361
PUT
Microsoft
MSFT
$2.9T
| $619K | 0.05% |
6,128
+2,773
| +83% | +$145K |
|
362
CALL
Tyson Foods
TSN
$20.1B
| $618K | 0.05% |
1,007
+50
| +5% | +$3.01K |
|
|
AKRX
363
DELISTED
Akorn Inc
AKRX
| $618K | 0.05% |
+26,305
| New | +$692K |
|
|
CPGX
364
DELISTED
COLUMBIA PIPELINE GROUP IN COM STK (DE)
CPGX
| $617K | 0.05% |
24,604
+7,905
| +47% | +$153K |
|
365
Golar LNG
GLNG
$5.06B
| $616K | 0.05% |
+34,289
| New | +$585K |
|
366
PUT
iShares Morningstar Value ETF
ILCV
$1.3B
| $616K | 0.05% |
11,270
+1,412
| +14% | +$56.3K |
|
367
Southwest Airlines
LUV
$23.3B
| $616K | 0.05% |
13,759
-4,324
| -24% | -$176K |
|
368
Direxion Daily Real Estate Bull 3X ETF
DRN
$48.5M
| $615K | 0.05% |
28,160
+24,804
| +739% | +$430K |
|
|
NTI
369
DELISTED
NORTHERN TIER ENERGY LP CLASS A
NTI
| $614K | 0.05% |
26,085
-979
| -4% | -$23.6K |
|
370
ProShares UltraPro Russell2000
URTY
$333M
| $613K | 0.05% |
+18,100
| New | +$510K |
|
371
iShares US Real Estate ETF
IYR
$4.5B
| $612K | 0.05% |
+7,873
| New | +$571K |
|
|
KANG
372
DELISTED
iKang Healthcare Group, Inc.
KANG
| $610K | 0.05% |
27,910
+16,277
| +140% | +$339K |
|
373
Novartis
NVS
$292B
| $609K | 0.05% |
9,384
+6,018
| +179% | +$409K |
|
374
United States Natural Gas Fund
UNG
$472M
| $608K | 0.05% |
5,710
+2,548
| +81% | +$293K |
|
375
Vanguard Consumer Discretionary ETF
VCR
$6.07B
| $606K | 0.05% |
4,888
+13
| +0.3% | +$1.51K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.